9 Front USB Connector 10 PCIe Connector 3
11 Front VGA Connector 12 M.2 Power Connector
13 Fan 1 connector
14 Connector for external diagnostics panel
15 Fan 2 connector 16 Fan 3 connector
17 Diagnostics panel connector 18 Fan 4 connector
19 Intrusion Switch cable Connector
20 Fan 5 connector
21 Fan 6 connector 22 Fan 7 connector
23 Fan 8 connector
24 Backplane Power Connector
25 System Board Lift Handle 26 PCIe Connector 1
27 PCIe Connector 4 28 PCIe Connector 5
29 Power Supply 1 Connector 30 PCIe Connector 7
31 PCIe Connector 8 32 Power Supply 2 Connector
33 Internal Raid Power Connector 34 PCIe Connector 6
35 PCIe Connector 9 (Reserved) 36 PCIe Connector 10 (Reserved)
37 PCIe Connector 2
38 Riser 2 slot
Parts list
Use the parts list to identify each of the components that are available for your server.
For more information about ordering the parts shown in Figure 9 “Server components” on page 47:
https://datacentersupport.lenovo.com/products/servers/thinksystem/sr645/7d2x/parts
Note: Depending on the model, your server might look slightly different from the illustration.
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ThinkSystem SR645 Setup Guide