Server and server chassis thereof
The assembly space and guide slot positioning structure designed with guide plates solve the problems of insufficient connection wire length and heat dissipation obstruction, thus achieving stable installation and effective heat dissipation of the expansion device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-06-26
AI Technical Summary
When installing expansion kits on a server, insufficient cable length necessitates disassembly and reconnection. Cables bundled together hinder the sliding of expansion kits and obstruct heat dissipation space, resulting in poor heat dissipation.
The guide plate design creates an assembly space. The guide grooves and positioning grooves on the guide plate guide the movement and fixation of the guide column of the expansion device. The length of the connecting line is reasonably arranged to avoid obstructing the heat dissipation space.
This achieved stable installation and effective heat dissipation of the expansion device, avoiding the need for excessively long connection cables and improving the server's heat dissipation performance.
Smart Images
Figure CN122284769A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a server and its chassis, and more particularly to a server and its chassis that uses a guide plate to assist in the assembly of expansion devices. Background Technology
[0002] Currently, when installing expansion kits (storage circuits or computing circuits) on servers, the expansion kits are assembled inside the server chassis via rails. Since the expansion kits need to be electrically connected to the motherboard connectors via cables, operators need to allow for a relatively long cable length. Otherwise, if the cable length is insufficient, the expansion kit must be removed from the server chassis again to replace the cable. Furthermore, multiple cables are often bundled together, which can obstruct the sliding of the expansion kit when it is inserted into the chassis. Excessive cables also block more ventilation space, resulting in poor heat dissipation from the server chassis for the expansion kits. Summary of the Invention
[0003] The purpose of this invention is to provide a server and its chassis to solve at least one of the above-mentioned problems.
[0004] In view of this, in some embodiments, the server includes a server chassis, a motherboard, and connecting cables. The server chassis includes a chassis body, two guide plates, and an expansion device. The chassis body includes a base plate. The two guide plates are respectively fixed to the base plate and spaced apart from each other. An assembly space exists between the two guide plates and the base plate. Each guide plate has a long side, a short side, and two assembly portions. The two assembly portions are spaced apart from each other. Each assembly portion includes a guide groove and a first positioning groove. The extension direction of the guide groove is parallel to the short side. The first positioning groove communicates with the guide groove and has an assembly direction that is not perpendicular to the long side. The expansion device has two sides, each side having two guide posts spaced apart from each other. These guide posts extend into the guide grooves of these assembly portions along their extension directions and are fixed to the first positioning grooves of these assembly portions along the assembly direction, thereby fixing the expansion device in the assembly space. The motherboard is fixed to the base plate of the server chassis and has a connector. The expansion device has an air inlet surface and an air outlet surface in the assembly direction. The air inlet surface has a connecting portion facing the motherboard. One end of the connecting wire is electrically connected to the connector. The other end of the connecting wire is connected to the connector part.
[0005] In some embodiments, each guide groove includes an opening and a bottom, the bottom being adjacent to the substrate, and a first positioning groove being located between the opening and the substrate.
[0006] In some embodiments, each assembly part further includes a second positioning groove, the first positioning groove being adjacent to the bottom and the second positioning groove being adjacent to the opening.
[0007] In some embodiments, the first and second positioning slots of one of the two guide plates are symmetrical to each other in the extension direction with the first and second positioning slots of the other of the two guide plates.
[0008] In some embodiments, each guide plate has a first positioning groove and a second positioning groove on one side, and a third positioning groove and a fourth positioning groove on the other side, with the third positioning groove adjacent to the bottom and the fourth positioning groove adjacent to the opening; wherein the first positioning groove and the second positioning groove are offset from the third positioning groove and the fourth positioning groove in the extending direction.
[0009] In some embodiments, each guide plate has a first positioning groove on one side and a third positioning groove on the other side; wherein the first positioning groove and the third positioning groove are offset from each other in the extending direction.
[0010] In some embodiments, the chassis body further includes a side plate connected to the base plate, wherein one guide plate is fixed to the base plate and the other guide plate is fixed to the side plate.
[0011] In some embodiments, the width of each guide groove is greater than twice the width of each guide post.
[0012] In some embodiments, each guide plate has a limiting portion, the expansion device has a limiting member, and when each guide post is located in the first positioning groove of the two guide plates, the limiting member matches the limiting portion.
[0013] In some embodiments, each guide plate has a latch portion, the expansion device has a latching member, and when each guide post is located in the first positioning groove of the two guide plates, the latching member matches the latch portion.
[0014] In some embodiments, the connecting line has a first length, the distance between the air outlet surface and the connector is a second length, and the distance between the connecting part and the connector is a third length; wherein the second length is greater than the third length, and the first length is between the second length and the third length.
[0015] In some embodiments, the expansion device has a heat dissipation space and an expansion circuit board. The heat dissipation space is connected to the air inlet, air outlet and chassis body, respectively, and the expansion circuit board is located in the heat dissipation space.
[0016] In summary, in some embodiments of the server, two guide plates are respectively fixed to the base plate to form an assembly space. When an expansion device is to be assembled in the assembly space, the guide slots of the guide plates can guide the guide posts of the expansion device to move along the extension direction within the guide slots. When the guide posts move to the position corresponding to the first positioning slot, the guide posts can be fixed in the first positioning slot along the assembly direction, thereby positioning the expansion device in the assembly space. Since the expansion device is installed in the assembly space in the extension direction (i.e., parallel to the short side), the connection cable connecting the expansion device to the connector can avoid excessive length, ensuring that the expansion device is not obstructed by the connection cable and thus does not affect heat dissipation.
[0017] Various embodiments are described in detail below; however, these embodiments are merely illustrative and do not limit the scope of protection intended for this invention. Furthermore, some elements are omitted from the accompanying drawings in the embodiments to clearly illustrate the technical features of the invention. The same reference numerals will be used to denote the same or similar elements in all the drawings. Attached Figure Description
[0018] Figure 1 This is a perspective view of the server in some embodiments of the present invention.
[0019] Figure 2 In some embodiments of the present invention, the exploded view of the server only shows the portion of the motherboard with the guide plate.
[0020] Figure 3 for Figure 1 A magnified view of a portion of region 3 in the middle.
[0021] Figure 4 for Figure 1 Top view.
[0022] Figure 5 This is a schematic diagram (a) showing the expansion device mounted on the guide plate in some embodiments of the present invention.
[0023] Figure 6 This is a schematic diagram (II) showing the expansion device mounted on the guide plate in some embodiments of the present invention.
[0024] Figure 7 for Figure 1 The main view.
[0025] Figure 8 This is a schematic diagram illustrating the implementation of the guide plate in some embodiments of the present invention.
[0026] Figure 9 This is a schematic diagram illustrating an embodiment of the present invention in which two guide plates are fixed to a substrate in some embodiments.
[0027] Figure 10 for Figure 1A magnified view of a portion of region 10 in the middle.
[0028] Figure 11 for Figure 10 Schematic diagram of the operation of the middle latch (I).
[0029] Figure 12 for Figure 10 Schematic diagram of the operation of the middle latch (II).
[0030] The attached figures are labeled as follows:
[0031] 100: Server
[0032] 102: Server Chassis
[0033] 103: Fan Module
[0034] 104: Motherboard
[0035] 106: Connecting cable
[0036] 108: Chassis Body
[0037] 110,110': Guide plate
[0038] 112: Expansion Device
[0039] 114:Substrate
[0040] 116: Long side
[0041] 118: Short side
[0042] 120: Assembly Department
[0043] 122: Guide groove
[0044] 124: First positioning slot
[0045] 111, 113, 126: Side view
[0046] 128: Guide column
[0047] 130: Connector
[0048] 132: Air intake side
[0049] 134: Air outlet
[0050] 136: Connecting part
[0051] 138: Expansion Circuit Board
[0052] 140: Opening
[0053] 141: Guide ramp
[0054] 142: Bottom
[0055] 144: Second positioning slot
[0056] 146: Third positioning slot
[0057] 148: Fourth positioning slot
[0058] 150: Side panel
[0059] 152: Limiting part
[0060] 154: Limiting component
[0061] 156:Latch
[0062] 158: Latch
[0063] 3,10: Area
[0064] D1: Extension direction
[0065] D2: Assembly Direction
[0066] S1: Assembly Space
[0067] S2: Heat dissipation space
[0068] L2: Second Length
[0069] L3: Third Length Detailed Implementation
[0070] Please see Figure 1 , Figure 2 and Figure 3 . Figure 1 This is a perspective view of the server in some embodiments of the present invention. Figure 2 In some embodiments of the present invention, the exploded view of the server only shows the portion of the motherboard with the guide plate. Figure 3 for Figure 1 A magnified view of a portion of region 3. In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, server 100 includes a server chassis 102, a motherboard 104, and a connecting cable 106 (hereinafter referred to as...). Figure 4 The motherboard 104 and connecting cables 106 are housed inside the server chassis 102. The server 100 may be, for example, a GPU co-computing server, a rack server, or a high-density storage server.
[0071] Server chassis 102 includes a chassis body 108, two guide plates 110, and an expansion device 112. The chassis body 108 includes a base plate 114. The two guide plates 110 are respectively fixed to the base plate 114 and spaced apart from each other. An assembly space S1 is provided between the two guide plates 110 and the base plate 114. The two guide plates 110 can be indirectly fixed to the base plate 114 by locking, snapping, magnetic attraction, or welding, so that the guide plates 110 can be disposed on the base plate 114 and form the assembly space S1 for the expansion device 112 to be assembled in the same assembly space S1. The size of the assembly space S1 can be set according to the size specifications of the expansion device 112. The guide plates 110 can also be directly locked to the locking points of the base plate 114. Any implementation that allows the guide plates 110 to be disposed on the base plate 114 is acceptable and not limited to the foregoing. In some embodiments, the chassis body 108 may include a removable cover. Figure 1 To facilitate understanding of the correspondence between the guide plate 110 and the expansion device 112 inside the chassis body 108, the removable cover is not shown. The removable cover is assembled on the opposite side of the base plate 114, so that the chassis body 108 forms a chassis that is not completely closed.
[0072] Each guide plate 110 has a long side 116, a short side 118, and two assembly portions 120. The two assembly portions 120 are arranged spaced apart from each other. Each assembly portion 120 includes a guide groove 122 and a first positioning groove 124. The guide groove 122 extends in a direction D1 (e.g., Figure 2 The direction of the Z-axis is parallel to the direction of the short side 118. The first positioning groove 124 is connected to the guide groove 122 and has an assembly direction D2, which is not perpendicular to the direction of the long side 116 (e.g., the direction of the Z-axis is parallel to the direction of the short side 118). Figure 2 (In the Y-axis direction). For example, the assembly direction D2 of the first positioning slot 124 can be parallel to the direction of the long side 116 (e.g., Figure 2 As shown, the assembly direction D2 is perpendicular to the aforementioned extension direction D1, or the assembly direction D2 and the long side 116 may have an angle (this angle is between 1° and 90°, such as 5° to 30°). The expansion device 112 has two sides 126, and each side 126 has two guide posts 128 arranged at intervals between each other.
[0073] Please refer to the following: Figure 2 , Figure 5 and Figure 6 . Figure 5 This is a schematic diagram (a) showing the expansion device mounted on the guide plate in some embodiments of the present invention. Figure 6 This is a schematic diagram (II) showing the expansion device mounted on the guide plate in some embodiments of the present invention. In some embodiments, such as Figure 5 and Figure 6As shown, when installing the expansion device 112, the guide posts 128 can respectively enter the guide slots 122 of the assembly parts 120 along the extension direction D1. When the guide posts 128 and the first positioning slots 124 are at the same height, the guide posts 128 can be fixed in the first positioning slots 124 of the assembly parts 120 along the assembly direction D2, so that the expansion device 112 is fixed in the assembly space S1. It should be noted that, according to the length of the short side 118 ( Figure 2 The length of the Z-axis direction), the assembly space S1 can assemble one or more expansion devices 112. For example Figure 1 The diagram shows that one or two expansion devices 112 can be assembled in the same assembly space S1.
[0074] Please refer to the following: Figure 2 and Figure 4 . Figure 4 for Figure 1 A top view. (e.g.) Figure 2 and Figure 4 As shown, the motherboard 104 is fixed to the base plate 114 of the server chassis 102 and has a connector 130. The connector 130 can be an interface specification corresponding to the expansion device 112, such as PCIe, NVM Express, or M.2.
[0075] The expansion device 112 can be an operational circuit or a storage circuit. The expansion device 112 has an air inlet surface 132 and an air outlet surface 134 in the assembly direction D2. The air inlet surface 132 has a connecting portion 136 facing the motherboard 104. One end of the connecting wire 106 is electrically connected to the connector 130. The other end of the connecting wire 106 is connected to the connecting portion 136. The connecting portion 136 of the expansion device 112 has a terminal corresponding to the specification of the connector 130.
[0076] When the expansion device 112 is assembled into the chassis body 108, the expansion device 112 is assembled in the assembly space S1 along the extension direction D1 (parallel to the short side 118). Here, the connecting cable 106 does not need to be excessively long to electrically connect the connecting part 136 and the connector 130. This avoids reducing the heat dissipation effect inside the server chassis 102 by allowing the connecting cable 106 to be excessively long.
[0077] For example, please refer to the following: Figure 4 and Figure 7 , Figure 7 for Figure 1 The main view. For example... Figure 7As shown, the expansion device 112 has a heat dissipation space S2 and an expansion circuit board 138. The heat dissipation space S2 is connected to the air inlet surface 132, the air outlet surface 134, and the chassis body 108, respectively, and the expansion circuit board 138 is located in the heat dissipation space S2. In some embodiments, the server 100 further includes at least one fan module 103. When actuated, the fan module 103 can sequentially deliver airflow to the air inlet surface 132, the heat dissipation space S2, and the air outlet surface 134 to dissipate heat from the expansion circuit board 138 located in the heat dissipation space S2. It should be emphasized that since the connecting cable 106 does not need to be excessively long, it can prevent the connecting cable 106 from blocking too much airflow into the heat dissipation space S2, thus ensuring the heat dissipation effect of the expansion device 112.
[0078] In some embodiments, such as Figure 4 As shown, the connecting line 106 has a first length (e.g. Figure 4 The lengths of the connecting cables 106 are as follows: The distance between the air outlet 134 and the connector 130 is a second length L2. The distance between the connecting part 136 and the connector 130 is a third length L3. The second length L2 is greater than the third length L3, and the first length is between the second length L2 and the third length L3. In this case, existing server chassis use a sliding rail assembly, requiring at least the second length L2 for the connecting cable to connect smoothly to the connector. In contrast, the expansion device 112 is assembled in the assembly space S1 along the extension direction D1, allowing the connecting cable 106 to be electrically connected to the connector 130 with only the first length.
[0079] In some embodiments, such as Figure 2 and Figure 5 As shown, each guide groove 122 includes an opening 140 and a bottom 142. The bottom 142 is adjacent to the substrate 114. A first positioning groove 124 is located between the opening 140 and the substrate 114. The expansion device 112 can enter the guide groove 122 through the opening 140 to be assembled in the assembly space S1. In some embodiments, the opening 140 includes two guide ramps 141, the width of which is greater than the width of the guide post 128. Thus, during the process of the guide post 128 entering the guide groove 122, the guide ramps 141 can guide the guide post 128 into the guide groove 122.
[0080] In some embodiments, such as Figure 2 and Figure 5 As shown, each assembly part 120 also includes a second positioning groove 144. The first positioning groove 124 is adjacent to the bottom 142, and the second positioning groove 144 is adjacent to the opening 140. The spacing between the first positioning groove 124 and the second positioning groove 144 can be adjusted according to the height of the expansion device 112 (e.g., ...). Figure 5 The length of the expansion device 112 in the Z-axis direction is determined so that two expansion devices 112 can be assembled in the same guide groove 122.
[0081] In some embodiments, such as Figure 2 and Figure 5 As shown, the first positioning groove 124 and the second positioning groove 144 of one of the two guide plates 110 are symmetrical to each other in the extending direction D1 with respect to the first positioning groove 124 and the second positioning groove 144 of the other guide plate 110. That is, the first positioning groove 124 and the second positioning groove 144 of the two opposing guide plates 110 are at the same height position. Figure 5 (Position in the Z-axis direction). Thus, when each guide post 128 moves in its corresponding guide groove 122, it can simultaneously enter the first positioning groove 124 and the second positioning groove 144.
[0082] Please see Figure 8 As shown, Figure 8 This is a schematic diagram illustrating the implementation of the guide plate in some embodiments of the present invention, with the expansion device assembled on the guide plate. In some embodiments, such as Figure 8 As shown, the guide plate 110 has three guide slots 122. When the guide posts 128 of the expansion device 112 enter the corresponding guide slots 122, the two sides of the expansion device 112 can generate three-point limiting on the two guide plates 110 respectively, so that the expansion device 112 can move stably relative to the two guide plates 110.
[0083] Please refer to the following: Figure 2 and Figure 9 . Figure 9 This is a schematic diagram illustrating an embodiment of the present invention in which two guide plates are fixed to a substrate. In some embodiments, such as Figure 2 and Figure 9 As shown, the first positioning groove 124 and the second positioning groove 144 of one of the two guide plates 110 are symmetrical to each other in the extending direction D1 with respect to the first positioning groove 124 and the second positioning groove 144 of the other guide plate 110. That is, the two adjacent and opposing guide plates 110 are mirror-mounted on the substrate 114, such that the first positioning groove 124 and the second positioning groove 144 of the two guide plates 110 are located at the same height. Figure 9 (Position in the Z-axis direction). Thus, when each guide post 128 moves in its corresponding guide groove 122, it can simultaneously enter the first positioning groove 124 and the second positioning groove 144.
[0084] In such Figure 9As shown, one side 111 of each guide plate 110 has a first positioning groove 124 and a second positioning groove 144. The other side 113 has a third positioning groove 146 and a fourth positioning groove 148. The third positioning groove 146 is adjacent to the bottom 142, and the fourth positioning groove 148 is adjacent to the opening 140. The first positioning groove 124 and the second positioning groove 144 are offset from the third positioning groove 146 and the fourth positioning groove 148 in the extending direction D1. The substrate 114 can be used to assemble two expansion devices 112 on the two sides (111, 113) of the same guide plate 110 according to expansion requirements. The first positioning groove 124 is offset from the third positioning groove 146 in the extending direction D1, and the second positioning groove 144 is offset from the fourth positioning groove 148 in the extending direction D1. Therefore, when the guide post 128 of the expansion device 112 is fixed to the second positioning groove 144, and the guide post 128 of the other expansion device 112 is fixed to the fourth positioning groove 148, the guide posts 128 of the expansion device 112 can be assembled in the same guide groove 122 without interfering with each other by the misalignment of the second positioning groove 144 and the fourth positioning groove 148. In some embodiments, the two sides (111, 113) of the guide plate 110 may also have only one first positioning groove 124 and one third positioning groove 146 (or one second positioning groove 144 and one fourth positioning groove 148).
[0085] In some embodiments, the width of each guide groove 122 is greater than twice the width of each guide post 128. Thus, the guide posts 128 of the two expansion devices 112 can be simultaneously assembled in the same guide groove 122 without interfering with each other.
[0086] In some embodiments, such as Figure 2 As shown, the chassis body 108 also includes a side panel 150 connected to the base plate 114. One of the guide plates 110 can be fixed to the base plate 114, and the other guide plate 110' can be fixed to the side panel 150. Thus, an assembly space S1 can also be formed between the guide plate 110' and the guide plate 110 on the side panel 150, for the expansion device 112 to be assembled in this assembly space S1.
[0087] Please see Figure 10 , Figure 10 for Figure 1 A magnified view of a portion of region 10. In some embodiments, such as Figure 10As shown, each guide plate 110 has a limiting portion 152. The expansion device 112 has a limiting member 154. When each guide post 128 is located in the first positioning groove 124 of the two guide plates 110, the limiting member 154 matches the limiting portion 152. The limiting portion 152 can be a through hole, and the limiting member 154 can be a resilient pin; when the expansion device 112 is assembled in the assembly space S1, the resilient pin can be matched into the through hole. In this way, the resilient pin is located in the through hole, and the resilient pin can produce a limiting effect on the expansion device 112 in the assembly direction D2.
[0088] Please refer to the following: Figure 11 and Figure 12 . Figure 11 for Figure 10 Schematic diagram of the operation of the middle latch (I). Figure 12 for Figure 10 Schematic diagram of the operation of the latch (II). In some embodiments, such as Figure 11 and Figure 12 As shown, each guide plate 110 has a latch portion 156. The expansion device 112 has a latching element 158. When each guide post 128 is located in the first positioning groove 124 of the two guide plates 110, the latching element 158 matches the latch portion 156. The latch portion 156 can be a groove, and the latching element 158 can be an elastic snap; when the expansion device 112 moves the guide groove 122, the elastic snap can press against the guide plate 110. When the expansion device 112 is fixed in the first positioning groove 124, the elastic snap can be released and fixed in the groove, and the elastic snap can produce a limiting effect on the expansion device 112 in the assembly direction D2.
[0089] In summary, in some embodiments of the server 100, two guide plates 110 are respectively fixed to the substrate 114 to form an assembly space S1. When the expansion device 112 is to be assembled in the assembly space S1, the guide groove 122 of the guide plate 110 can guide the guide post 128 of the expansion device 112 to move along the extension direction D1 within the guide groove 122. When the guide post 128 moves to the position corresponding to the first positioning groove 124, the guide post 128 can be fixed in the first positioning groove 124 along the assembly direction D2, thereby positioning the expansion device 112 in the assembly space S1. Since the expansion device 112 is installed in the assembly space S1 with the extension direction D1, the connection cable 106 connecting the expansion device 112 to the connector 130 can avoid excessive length, ensuring that the expansion device 112 is not obstructed by the connection cable 106 and thus does not hinder heat dissipation.
[0090] The embodiments described above are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the patent scope of the present invention. That is, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention should still be covered within the claims of the present invention.
Claims
1. A server chassis, characterized by, include: A chassis body, including a base plate; Two guide plates are fixed to the substrate and spaced apart from each other. There is an assembly space between the two guide plates and the substrate. Each guide plate has a long side, a short side and two assembly parts. The two assembly parts are spaced apart from each other. Each assembly part includes a guide groove and a first positioning groove. An extension direction of the guide groove is parallel to the short side. The first positioning groove is connected to the guide groove and has an assembly direction that is not perpendicular to the long side. as well as An expansion device has two sides, each side having two guide posts spaced apart from each other. The two guide posts enter the guide grooves of the two assembly parts along the extension direction and are fixed to the first positioning grooves of the two assembly parts along the assembly direction, so that the expansion device is fixed in the assembly space.
2. The server chassis as described in claim 1, characterized in that, Each guide groove includes an opening and a bottom, the bottom being adjacent to the substrate, and the first positioning groove being located between the opening and the substrate.
3. The server chassis as described in claim 2, characterized in that, Each assembly part also includes a second positioning groove, the first positioning groove being adjacent to the bottom and the second positioning groove being adjacent to the opening.
4. The server chassis as described in claim 3, characterized in that, The first positioning groove and the second positioning groove of one of the two guide plates are respectively symmetrical to the first positioning groove and the second positioning groove of the other of the two guide plates in the extension direction.
5. The server chassis as described in claim 4, characterized in that, Each guide plate has a first positioning groove and a second positioning groove on one side, and a third positioning groove and a fourth positioning groove on the other side. The third positioning groove is adjacent to the bottom, and the fourth positioning groove is adjacent to the opening. The first positioning groove and the second positioning groove are offset from the third positioning groove and the fourth positioning groove in the extending direction.
6. The server chassis as described in claim 1, characterized in that, Each guide plate has a first positioning groove on one side and a third positioning groove on the other side; wherein the first positioning groove and the third positioning groove are offset from each other in the extending direction.
7. The server chassis as described in claim 1, characterized in that, The chassis body also includes a side panel connected to the base plate, wherein one guide plate is fixed to the base plate and the other guide plate is fixed to the side panel.
8. The server chassis as described in claim 1, characterized in that, The width of each guide groove is greater than twice the width of each guide post.
9. The server chassis as described in claim 1, characterized in that, Each guide plate has a limiting portion, and the expansion device has a limiting member. When each guide post is located in the first positioning groove of the two guide plates, the limiting member matches the limiting portion.
10. The server chassis as described in claim 1, characterized in that, Each guide plate has a latch, and the expansion device has a latch (elastic snap). When each guide post is located in the first positioning groove of the two guide plates, the latch matches the latch.
11. A server, characterized in that, include: The server chassis as claimed in any one of claims 1 to 10, wherein the expansion device has an air inlet surface and an air outlet surface in the assembly direction, and the air inlet surface has a connecting portion; A motherboard, fixed to the base plate of the server chassis and having a connector, the connector facing the motherboard; and A connecting wire, one end of which is electrically connected to the connector, and the other end of which is connected to the connecting part.
12. The server as described in claim 11, characterized in that, The connecting line has a first length, the distance between the air outlet surface and the connector is a second length, and the distance between the connecting part and the connector is a third length; wherein the second length is greater than the third length, and the first length is between the second length and the third length.
13. The server as described in claim 11, characterized in that, The expansion device has a heat dissipation space and an expansion circuit board. The heat dissipation space is connected to the air inlet, the air outlet and the chassis body, respectively. The expansion circuit board is located in the heat dissipation space.