CN103076861B - External expansion card assembly and external expansion card support thereof - Google Patents

Abstract

The present invention provides an external expansion card support for supporting and fixing an external expansion card. The external expansion card support includes a base, a positioning plate, a first supporting and fixing member, and a first circuit board. The circuit board is provided with The first slot is used to insert an external expansion card, the circuit board is arranged on the base, the bottom of the positioning board is arranged on the first side of the base, and the board surface of the positioning board is arranged There are at least two positioning positions, and the first supporting and fixing member can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card. The present invention realizes the purpose of the external expansion card bracket supporting different types of external expansion cards by adjusting the positioning position of the first support and fixing member on the positioning plate, satisfies the needs of users, and brings benefits to users. convenience. The invention also provides an external expansion card assembly.

Description

External expansion card assembly and its external expansion card bracket

technical field

The invention relates to the communication field, in particular to an external expansion card assembly and an external expansion card bracket.

Background technique

With the rapid development of telecommunications and the Internet, users have higher and higher requirements for input and output of servers. Especially with the rapid growth of the demand for expansion of external expansion cards, the performance of external expansion cards is required to be stronger and stronger, resulting in more and more forms and types of external expansion cards. However, the existing brackets for fixing and supporting external expansion cards can only support and fix one type of external expansion cards. The external card expansion bracket can support and fix the replaced external expansion card. This brings inconvenience to the use of the user.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an external expansion card assembly and an external expansion card bracket thereof, so as to meet the user's demand for external expansion cards and bring convenience to the user.

The present invention provides an external expansion card bracket, which is used to support and fix an external expansion card. The external expansion card bracket includes a base, a positioning plate, a first supporting fixture and a first circuit board. There is a first slot for inserting an external expansion card, the first circuit board is arranged on the base, the bottom of the positioning board is arranged on the first side of the base, the board of the positioning board At least two positioning positions are provided on the surface, and the first supporting and fixing member can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card.

The present invention also provides an external expansion card assembly, including an external expansion card and an external expansion card bracket for supporting and fixing the external expansion card, the external expansion card bracket includes a base, a positioning plate, a first supporting and fixing member and The first circuit board is provided with a first slot for inserting an external expansion card, the first circuit board is arranged on the base, and the bottom of the positioning plate is arranged on the On the first side of the base, at least two positioning positions are provided on the surface of the positioning plate, and the first supporting and fixing member can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card.

The present invention relates to an external card extension bracket, which is used to support and fix an external expansion card. The external expansion card bracket includes a base, a positioning plate, a first supporting fixture and a first circuit board. a slot for inserting an external expansion card, the circuit board is arranged on the base, the bottom of the positioning board is arranged on the first side of the base, and at least two The first supporting and fixing member can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card. The present invention realizes the purpose of the external expansion card bracket supporting different types of external expansion cards by adjusting the positioning position of the first support and fixing member on the positioning plate, satisfies the needs of users, and brings benefits to the use of users. convenience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work;

Fig. 1 is the schematic diagram of the first preferred embodiment of the external expansion card assembly of the present invention;

Fig. 2 is a partially exploded schematic view of the first preferred embodiment of the external expansion card bracket of the present invention;

Fig. 3 is the schematic diagram of the fixing slot of the external expansion card bracket of the present invention;

4 is a schematic diagram of a second preferred embodiment of the external expansion card bracket of the present invention;

Fig. 5 is a schematic diagram of another direction of the second preferred embodiment of the external expansion card bracket of the present invention;

Fig. 6 is a schematic diagram of the first supporting and fixing part of the external expansion card bracket of the present invention;

Fig. 7 is a schematic diagram of a second preferred embodiment of the external expansion card assembly of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to FIG. 1 and FIG. 2 , the first preferred embodiment of the present invention provides an external expansion card assembly 100 . The external expansion card assembly 100 includes an external expansion card 10 and an external expansion card bracket 20 for supporting and fixing the external expansion card.

The external expansion card bracket 20 includes a base 21 , a positioning plate 22 , a first supporting and fixing member 23 , a second supporting and fixing member 24 and a first circuit board 25 .

The first circuit board 25 is provided with a slot 252 for inserting the external expansion card 10 . The first circuit board 25 is disposed on the base 21 .

The bottom of the positioning plate 22 is disposed on one side of the base 21 . At least two positioning positions are provided on the surface 222 of the positioning plate 22 , such as a first positioning position 223 , a second positioning position 224 and a third positioning position (not shown).

The first supporting and fixing member 23 can be selectively positioned on a positioning position of the positioning plate 22 to support and fix the corresponding external expansion card 10 . In this embodiment, the first supporting and fixing member 23 is positioned at the third positioning position of the positioning plate 22 .

The second supporting member 24 is fixed on the first end of the positioning plate 22 . An accommodating space is formed between the second supporting and fixing member 24 and the first supporting and fixing member 23 for accommodating the external expansion card 10 . When the external expansion card 10 is accommodated in the accommodating space and plugged into the slot 252, the first and second support members 23 and 24 jointly support and fix the external expansion card. 10.

Specifically, when the first supporting and fixing member 23 is positioned at the first positioning position 223 , the first and second supporting and fixing members 23 and 24 support and fix the first type of external expansion card. When the first supporting and fixing member 23 is positioned at the second positioning position 224 , the first and second supporting and fixing members 23 and 24 support and fix the second type of external expansion card. When the first supporting member 23 is positioned at the third positioning position, the first and second supporting members 23 and 24 support and fix the third type of external expansion card 10 .

In other embodiments, when the first supporting and fixing member 23 can securely support the external expansion card 10 , the second supporting and fixing member 24 can be omitted.

In this preferred embodiment, at least two positioning positions are set on the plate surface 222 of the positioning plate 22 of the external expansion card bracket 20 . The first side of the first supporting and fixing member 23 can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card 10, and the first supporting and fixing member 23 is positioned on the positioning plate by adjusting the 22 to achieve the purpose of the external expansion card bracket 20 supporting different types of external expansion cards 10 .

Wherein, each positioning position is provided with a set of positioning holes. Screws pass through the corresponding positioning holes and lock with the first supporting and fixing member 23, so that the first supporting and fixing member 23 is positioned at the corresponding positioning position.

In this embodiment, a first group of positioning holes 226 is provided at the first positioning position 223 . A second set of positioning holes 227 is disposed at the second positioning position 224 . A third set of positioning holes (not shown) is provided at the third positioning position. The first set of positioning holes 226 , the second set of positioning holes 227 and the third set of positioning holes are all the same.

The first supporting and fixing member 23 includes a first board body 231 , a first fixing portion 232 bent and extended from one side of the first board body 231 , and a fixing slot 233 provided on the first board body 231 .

The bottom of the first board 231 is fixed on the base 21 . The first plate body 231 is provided with a cooling hole 234 . The first fixing portion 232 is provided with screw holes (not shown) corresponding to the positioning holes on the positioning plate 22 . When the first supporting fixture 23 is positioned at one of the positioning positions, the screw 40 passes through the corresponding set of positioning holes on the positioning plate 22 and locks with the screw holes on the first fixing part 232 so that Position the first supporting and fixing member 23 at a corresponding positioning position.

Please continue to refer to FIG. 3 , the fixing slot 233 includes a support portion 2331 . The supporting portion 2331 is provided with a slideway 2332 . The sliding track 2332 runs through the bottom of the supporting portion 2331 . When the external expansion card 10 slides into the slideway 2332 through its end, and slides down along the slideway 2332, so that the insertion part of the external expansion card 10 is plugged into the first In the slot 252 on the circuit board 25. Therefore, the first supporting and fixing member 23 achieves a fixed support for the external expansion card 10 .

The second supporting fixture 24 includes a second plate body 241 , a second fixing portion (not shown) bent and extended from one side of the second plate body 241 , and a second plate body 241 disposed on the top of the second plate body 241 . The first buckle 242.

The bottom of the second board 241 is fixed on the base 21 . The second plate body 242 is provided with cooling holes 243 . The second fixing portion is fixed to the first end of the positioning plate 22 , so as to fix the second support and fixing member 24 on the positioning plate 22 . The first locking member 242 includes a first locking portion 244 and a second locking portion 245 . A first end of the second locking portion 245 is rotatably connected to a first end of the first locking portion 244 . The second end of the second locking portion 245 is engaged with the second end of the first locking portion 244 . When the insertion part of the external expansion card 10 needs to be plugged into the slot 252, the second buckle part 245 is disengaged from the state of being engaged with the first buckle part 244. When the plug-in part of the expansion card 10 is plugged into the slot 252, the connection and fixing part of the external expansion card 10 is located between the first and second buckle parts 244 and 245, and the second The buckle portion 245 is buckled to the first buckle portion 244 , so as to support and fix the external expansion card 10 by the second supporting and fixing member 24 .

Please refer to FIG. 4 and FIG. 5 , the second preferred embodiment of the present invention provides an external expansion card bracket 200 . The external expansion card bracket 200 includes a base 201 , a positioning plate 202 , a first supporting and fixing member 203 , a second supporting and fixing member 204 , a third supporting and fixing member 205 , a first circuit board 206 and a second circuit board 207 .

The bottom of the positioning plate 202 is disposed on one side of the base 201 . At least two positioning positions, such as a first positioning position 213 , a second positioning position 214 and a third positioning position 215 are provided on the surface 212 of the positioning plate 202 .

The first supporting and fixing member 203 can be selectively positioned on a positioning position of the positioning plate 202 to support and fix a corresponding external expansion card.

The second supporting member 204 is fixed on the first end of the positioning plate 202 . A first accommodating space is formed between the second supporting and fixing member 204 and the first supporting and fixing member 203 for accommodating an external expansion card.

The third supporting member 205 is fixed on the second end of the positioning plate 202 . A second accommodating space is formed between the third supporting and fixing member 205 and the first supporting and fixing member 203 for accommodating an external expansion card.

The first circuit board 206 is disposed on the base 201 and located between the first and second supporting and fixing members 203 and 204 . First and second slots 208 and 209 are disposed on the first circuit board 206 . When the two external expansion cards are accommodated in the first accommodating space and plugged into the first and second slots 208 and 209 respectively, the first and second supporting and fixing members 203 and 209 204 jointly support and fix the external expansion card.

The second circuit board 207 is disposed on the base 201 and located between the first and third supporting and fixing members 203 and 205 . Third and fourth slots 210 and 211 are disposed on the second circuit board 207 . When the two external expansion cards are accommodated in the second accommodating space and plugged into the third and fourth slots 210 and 211 respectively, the first and third supporting and fixing members 203 and 205 jointly supports and fixes the external expansion card.

Specifically, when the first supporting and fixing member 203 is positioned at the first positioning position 213, the first supporting and fixing member 203 and the third supporting and fixing member 205 can jointly support and fix the first type of circumscribed extension card (not shown). An external expansion card may not be placed between the first supporting and fixing member 203 and the second supporting and fixing member 204 . When the first supporting and fixing member 203 is positioned at the second positioning position 224, the first supporting and fixing member 203 and the second supporting and fixing member 204 can jointly support and fix the second type of external expansion card 102 . The first supporting and fixing member 203 and the third supporting and fixing member 205 can jointly support and fix the third type of external expansion card 103 (as shown in FIG. 7 ). When the first supporting and fixing member 203 is positioned at the third positioning position 215 , the first supporting and fixing member 203 and the third supporting and fixing member 205 can jointly support and fix the second type of external expansion card. The first supporting and fixing member 203 and the second supporting and fixing member 204 may not support and fix an external expansion card. In this embodiment, the external expansion card is a PCIE (peripheral component interconnect-express) expansion card.

In other implementations, when the first supporting member 203 can securely support the external expansion card, the second and third supporting members 204 and 205 can be omitted. The first and second circuit boards 206 and 207 may also be provided with only one slot respectively according to actual needs. The first to third positioning positions 231-215 on the positioning plate 202 can be adjusted according to actual conditions, and the number of positioning positions can also be adjusted according to actual conditions.

In this preferred embodiment, at least two positioning positions are set on the plate surface 212 of the positioning plate 202 of the external expansion card bracket 200 . The first side of the first supporting and fixing member 203 can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card. By adjusting the first supporting and fixing member 203 to be positioned on the positioning plate 202 The location of the external expansion card bracket 20 is used to support different types of external expansion cards 10 .

Please continue to refer to FIG. 5 , each positioning position is provided with a set of positioning holes. Screws pass through corresponding positioning holes and are locked with the first supporting and fixing member 203 , so that the first supporting and fixing member 203 is positioned at a corresponding positioning position.

In this embodiment, the first positioning position 213 is provided with a first group of positioning holes 216 . A second set of positioning holes (not shown) is provided at the second positioning position 214 . A third set of positioning holes 218 is disposed at the third positioning position 215 . The first set of positioning holes 216 , the second set of positioning holes and the third set of positioning holes 218 are all the same.

A slideway 2021 may also be provided on the positioning plate 202 . A slider 2031 is disposed on the first supporting and fixing member 203 . The slider 2031 is disposed in the slideway 2021 and can slide in the slideway 2021 , so as to drive the first supporting and fixing member 203 to move between the positioning positions.

Please continue to refer to FIG. 6 , the first supporting and fixing member 203 may include a first plate body 2032 , a first fixing portion 2035 extending vertically from the first side of the first plate body 2032 , and a A support portion (not shown), a first support plate 2033 , a second support plate 2034 and a bottom plate 2036 are vertically bent and extended from a second side of a plate body 2032 . Screw holes 2038 corresponding to the first to third positioning holes 216 - 218 are disposed on the first fixing portion 2035 . The first plate body 2032 is provided with cooling holes 2037 . One side of the first support plate 2033 is vertically disposed on the second side of the first plate body 2032 and attached to the support portion. One side of the second support plate 2034 is vertically disposed on the first plate body 2032 , parallel to the first support plate 2033 , and has a predetermined distance between the first support plates 2033 . The bottom plate 2036 is roughly L-shaped. The bottom plate 2036 includes a connection portion 2039 and an isolation portion 2040 vertically extending upward from one end of the connection portion 2039 . The bottom of the first board 2036 is disposed at one end of the connecting portion 2039 . The first ends of the first and second supporting plates 2033 and 2034 and the first ends of the supporting parts are also connected to the connecting part 2039 . The second end of the supporting part is bent and extends out of the fixing part 2041 to fix between the first supporting and fixing parts 203 .

When the first support and fixing member 203 is positioned at one of the positioning positions, the screws 41 pass through the corresponding set of positioning holes on the positioning plate 202 and lock with the screw holes 2038 on the first fixing part 2035 Thus, the first supporting and fixing member 203 is positioned at a corresponding positioning position.

The second support fixture 204 includes a second plate body 2041 , a second fixing portion (not shown) bent and extended from the first side of the second plate body 2041 , and a second side of the second plate body 2041 The extended supporting portion 2042 is bent. The bottom of the second board 2041 is fixed on the base 21 . The second plate body 2041 is provided with a cooling hole 2043 . The second fixing portion is fixed on the first end of the positioning plate 22 , so as to fix the second support and fixing member 204 on the positioning plate 202 .

The second supporting fixture 204 may further include a third supporting plate 2044 and a fourth supporting plate 2045 . The third support plate 2044 is vertically disposed on the second side of the second plate body 2041 and attached to the support portion 2042 . The fourth support plate 2045 is vertically disposed on the second plate body 2041 , parallel to the third support plate 2044 , and has a predetermined distance between the third support plates 2044 .

The second supporting and fixing member 204 may also include a buckle (not shown). The locking member is disposed on the top of the second board 2041 . The specific structure of the buckle may be the same as that of the first buckle (242), which will not be repeated here.

The third supporting and fixing member 205 includes a third plate body 2051 , a third fixing portion 2052 bent and extended from a first side of the third plate body 2051 , and a locking member 2053 . The bottom of the third board 2051 is disposed on the base 201 . The third fixing portion 2052 is fixed on the second end of the positioning plate 202 . The third plate body 2051 is provided with cooling holes 2054 . The locking member 2053 includes a third locking portion 2055 and a fourth locking portion (not shown). The first end of the third locking part 2055 is rotatably connected to the first end of the fourth locking part. The second end of the third locking portion 2055 is engaged with the second end of the fourth locking portion. When the external expansion card is plugged into the third and fourth slots 210 and 211 on the second circuit board 207, the connection and fixing part (not shown) of the expansion external card is engaged with the between the third buckle part 2055 and the fourth buckle part, so as to support and fix the external expansion card.

Wherein, in this embodiment, the external expansion card bracket 200 further includes an auxiliary buckle 300 . The auxiliary buckle 300 is disposed at the second positioning position 217 of the positioning board 202 to fix the external expansion card plugged into the first circuit board 201 with the auxiliary buckle.

The auxiliary buckle 300 includes a fourth board 301 , a support portion 302 extending from a second side of the fourth board, and a buckle assembly 303 disposed on the top of the fourth board 301 . The first side of the fourth board 301 is fixed at the second positioning position 217 of the positioning board 202 . The buckle assembly 303 includes a first buckle portion 304 and a second buckle portion (not shown). A first end of the first locking portion 304 is rotatably connected to a first end of the second locking portion. The second end of the first locking portion 304 is engaged with the second end of the second locking portion. When the external expansion card is inserted into the first circuit board 206, the connection and fixing part (not shown) of the expansion external card is engaged between the first buckle part 304 and the second buckle part. space, so as to support and fix the external expansion card.

In this preferred embodiment, at least two positioning positions are set on the plate surface 212 of the positioning plate 202 of the external expansion card bracket 200 . The first side of the first supporting and fixing member 203 can be selectively positioned at one of the positioning positions to support and fix the corresponding external expansion card. By adjusting the first supporting and fixing member 203 to be positioned on the positioning plate 202 The positioning position realizes the purpose of the external expansion card bracket 20 supporting different types of external expansion cards 10, meets the needs of users, and brings convenience to users.

The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (13)

1. an external expansion card support, fixes first and second external expansion card for support, described external Expansion card bracket includes pedestal, location-plate, the first support fixture and first circuit board, described first circuit Being provided with the first slot on plate, with grafting the first external expansion card, described first circuit board is arranged on described base On seat, the bottom of described location-plate is arranged at the first side of described pedestal, and the plate face of described location-plate is arranged At least two position location, described first supports fixture can be optionally located at a wherein position location, To support fixing corresponding external expansion card, wherein, described external expansion card support also includes that the second support is solid Locking member, the 3rd support fixture and second circuit board, the described second the first side supporting fixture is arranged on institute State the first end of location-plate, support fixture with described first and collectively form the first accommodating area, with accommodating institute Stating the first external expansion card, described first circuit board supports between fixture at described first and second, when Described first external expansion card is contained in described first accommodating area, and when being plugged on described first slot, institute Stating first and second support fixture and jointly support fixing described first external expansion card, the described 3rd supports admittedly Locking member is fixed on the second end of described location-plate, and described second circuit board is arranged on described pedestal, and position Supporting fixture and the described 3rd in described first to support between fixture, described second circuit board is provided with the Three slots, for the second external expansion card described in grafting, the described 3rd supports fixture supports with described first Fixture constitutes the second accommodating area, with accommodating described second external expansion card, when described second external expansion card It is contained in described second accommodating area, and when being plugged on described 3rd slot, described first and the 3rd supports admittedly Locking member supports fixing described second external expansion card jointly.

2. external expansion card support as claimed in claim 1, it is characterised in that equal at each position location It is provided with hole, one group of location, sealed with described first support fixture through hole, corresponding location by screw, from And support fixture by described first and be positioned on corresponding position location.

3. external expansion card support as claimed in claim 2, it is characterised in that described first support is fixing Part includes the first fixed part that the first plate body and the first lateral buckling by described first plate body extend, described The screw in hole, corresponding location it is provided with, by described screw optionally through corresponding location on one fixed part Hole is sealed with described screw spiral, thus supports fixture by described first and be positioned at corresponding position location.

4. external expansion card support as claimed in claim 3, it is characterised in that described first support is fixing Part also includes that the first gripper shoe, described first gripper shoe are arranged at the second side of described first plate body, for working as Described external expansion card is plugged to during the first slot of described first circuit board support described external expansion card.

5. external expansion card support as claimed in claim 4, it is characterised in that described first support is fixing Part also include the second gripper shoe, described second gripper shoe be arranged at described first plate body first and second side it Between, described first circuit board is additionally provided with the second slot, when first and second slot described respectively grafting the One and during the second external expansion card, first and second gripper shoe described supports first and second external extension respectively Card.

6. external expansion card support as claimed in claim 1, it is characterised in that arrange on described location-plate Having slideway, described first support fixture is provided with slide block, described slide block is arranged in described slideway, and Can slide in described slideway, thus drive described first to support fixture and move between described position location.

7. external expansion card support as claimed in claim 1, it is characterised in that described second support is fixing Part includes the second fixed part that the second plate body, the first lateral buckling by described second plate body extend and is arranged on First fastener at the top of described second plate body, described second fixed part is fixed on the first of described location-plate End, described first fastener is fixed the connecting portion of described external expansion card.

8. external expansion card support as claimed in claim 7, it is characterised in that described first fastener bag Including the first clamping part and the second clamping part, the first end of described second clamping part is rotationally attached to described The first end of the first clamping part, the second end of described second clamping part is fastened on described first clamping part The second end, when described external expansion card is plugged in described first slot, the company of described expanding external card Connect fixed part to be sticked between described first clamping part and the second clamping part.

9. external expansion card support as claimed in claim 7, it is characterised in that described second support is fixing Part also includes that the 3rd gripper shoe, described 3rd gripper shoe are arranged at the second side of described second plate body, for working as Described external expansion card is plugged to during the first slot of described first circuit board support described external expansion card.

10. external expansion card support as claimed in claim 9, it is characterised in that described second support is fixing Part also include the 4th gripper shoe, described 4th gripper shoe be arranged at described second plate body first and second side it Between, described first circuit board is additionally provided with the second slot, when first and second slot described respectively grafting the One and during the second external expansion card, described 3rd gripper shoe supports described first external expansion card, and the described 4th Gripper shoe supports described second external expansion card.

11. external expansion card supports as claimed in claim 1, it is characterised in that described 3rd support is fixing Part includes the 3rd fixed part that the 3rd plate body, the first lateral buckling by described 3rd plate body extend and is arranged on Second fastener at the top of described 3rd plate body, described 3rd fixed part is fixed on the second of described location-plate End, described second fastener is fixed the connecting portion of described external expansion card.

12. external expansion card supports as claimed in claim 11, it is characterised in that described second fastener Including the 3rd clamping part and the 4th clamping part, the first end of described 4th clamping part is rotationally attached to institute Stating the first end of the 3rd clamping part, the second end of described 4th clamping part is fastened on described 3rd clamping part The second end, when described external expansion card is plugged on described second circuit board, described expanding external card Connecting portion be sticked between described 3rd clamping part and the 4th clamping part.

13. 1 kinds of external expansion card assemblies, including first, second external expansion card and fixing described for supporting The external expansion card support of external expansion card, described external expansion card support include pedestal, location-plate, first Support fixture and first circuit board, described first circuit board be provided with the first slot, with grafting first outside Connecing expansion card, described first circuit board is arranged on described pedestal, and the bottom of described location-plate is arranged at described First side of pedestal, the plate face of described location-plate arranges at least two position location, and described first supports admittedly Locking member can be optionally located at a wherein position location, to support fixing corresponding external expansion card, wherein, Described external expansion card support also includes the second support fixture, the 3rd support fixture and second circuit board, Described second the first side supporting fixture is arranged on the first end of described location-plate, supports with described first Fixture collectively forms the first accommodating area, with accommodating described first external expansion card, described first circuit board position Support between fixture in described first and second, hold when described first external expansion card is contained in described first Put district, and when being plugged on described first slot, described first and second supports fixture and jointly support fixing Described first external expansion card, the described 3rd supports fixture is fixed on the second end of described location-plate, institute State and be arranged on second circuit board on described pedestal, and be positioned at described first support fixture with described 3rd Between support fixture, described second circuit board is provided with the 3rd slot, for the described in grafting second external extension Card, the described 3rd supports fixture constitutes the second accommodating area with described first support fixture, with accommodating described Second external expansion card, when described second external expansion card is contained in described second accommodating area, and is plugged in institute When stating on the 3rd slot, described first and the 3rd supports fixture supports fixing described second external extension jointly Card.