ThinkSystem SR645 V3 2x2.5" SAS/SATA Backplane Option Kit
See this document for information about the ThinkSystem SR645 V3 2x2.5" SAS/SATA Backplane Option Kit.
This option kit comes with the following components.
1 One ThinkSystem rear 2 x 2.5" SAS/SATA drive backplane
2 One ThinkSystem 1U rear 2 x 2.5" HDD cage
3 Two HDD fillers
4 One label
5 One label
6 One SlimSAS x4 to SlimSAS x4 cable, 810 mm
7 One power and sideband cable, 160 mm
8 One SlimSAS x4 to Mini-SAS HD x4 cable, 270 mm
9 One MCIO x4 to SlimSAS x4 cable, 250 mm
10 One SlimSAS x8 to SlimSAS x4 *2 cable, 550 mm / 270 mm
11 One SlimSAS x8 to SlimSAS x4 *2 cable, 860 mm / 270 mm
NOTE
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The illustration in this document might differ slightly from your hardware.
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The break lines indicate that part of the cable is hidden in the illustration. Refer to the information in this document for the actual cable length.
Option installation
- To install the option, refer to:
- For the latest technical information including firmware and driver downloads, go to Lenovo Data Center Support.

| Option installation | |
|---|---|
| To install the option, refer to “Hardware replacement procedures” and “Internal cable routing” in the server User Guide, which is available at Lenovo Docs https://pubs.lenovo.com. | |
| For the latest technical information including firmware and driver downloads, go to Lenovo Data Center Support website https://datacentersupport.lenovo.com. | |
First Edition (November 2023)
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LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration (GSA) contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925