Lenovo 4XH7A87641 SR645 V3 2X2.5IN Rear NVME BP OPT KIT

Lenovo 4XH7A87641 SR645 V3 Rear NVMe Backplane Option Kit

Overview

The Lenovo 4XH7A87641 is a rear-bay NVMe backplane option kit that adds two 2.5-inch NVMe drive slots to the back of the ThinkSystem SR645 V3 server. If your SR645 V3 is already maxed out on front-bay storage capacity or you need a dedicated fast-storage tier separate from primary drives — boot drives, write-cache, or high-priority datasets — this kit provides the physical backplane, cabling, and mounting hardware to provision those rear slots via native NVMe interface. Because NVMe bypasses the SAS/SATA controller layer entirely, drives installed here connect directly to the CPU complex, delivering the low-latency throughput that PCIe-attached storage is designed for. This is a server-internal hardware option, not a standalone drive or external enclosure.

Compatibility

The 4XH7A87641 is designed specifically for the Lenovo ThinkSystem SR645 V3 rack server. It is not cross-compatible with the SR645 (Gen 1 or Gen 2), SR655 V3, or other ThinkSystem platforms — rear backplane kits are chassis-specific due to physical form factor, backplane connector placement, and internal cable routing. Confirm your server's chassis generation before ordering; SR645 V3 is the only validated platform for this part number. Accepts standard 2.5-inch NVMe U.2 or U.3 drives depending on the SR645 V3 configuration — verify drive compatibility against Lenovo's SR645 V3 server storage options matrix. Sourced factory-new with genuine Lenovo components; no grey-market, no parallel imports.