ThinkSystem SR850 V4/SR860 V4 External M.2 RAID B540p-2HS SATA/NVMe Enablement Option Kit
See this document for information about the ThinkSystem SR850 V4/SR860 V4 External M.2 RAID B540p-2HS SATA/NVMe Enablement Option Kit.
This option kit comes with the following components.

1 One M.2 backplane
2 Two rear M.2 HS trays
3 One power cable, 520mm
4 One MCIO x4 to MCIO x4 cable, 520mm
NOTE
- The illustration in this document might differ slightly from your hardware.
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.- To make a rear M.2 drive assembly, match this option kit with two units of the following option: "ThinkSystem V4 Hot Swap M.2 SATA/NVMe Drive Assembly Kit".
Option installation
To install the option, refer to
Server model Hardware installation SR860 V4 Install the rear M.2 drive cage and backplane SR850 V4 Install the rear M.2 drive cage and backplane
- 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” 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 (May 2021)
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