Lenovo 4XH7B03846 SR650 V4 4X2.5IN NVME Rear BP Option KIT

Lenovo 4XH7B03846 SR650 V4 4x2.5-Inch NVMe Rear Backplane Option Kit

Overview

The Lenovo 4XH7B03846 is a rear drive backplane option kit that adds four 2.5-inch NVMe drive bays to the back of the ThinkSystem SR650 V4 server. If your SR650 V4 deployment is storage-constrained — surveillance NVR workloads, edge AI inference nodes, or dense video archive builds — this kit extends raw NVMe capacity without requiring a chassis swap or front-bay reconfiguration. The 4XH7B03846 ships from Mexico (country of origin: MX) and is classified under UNSPSC 43211600 (computer storage devices and media). Weight is 10.00 lb, consistent with a populated sheet-metal backplane assembly with cabling.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR650 V4 — the fourth-generation 2U rack server in the SR650 line. This kit is not interchangeable with SR650 V2 or V3 chassis; Lenovo uses generation-specific backplane connectors and mid-plane routing, so verify your chassis generation before ordering. The NVMe interface means drives must be U.2 or U.3 NVMe — SATA or SAS 2.5-inch drives will not connect to this backplane. If your network video recorder or storage node is running a mix of SATA and NVMe rear drives, you need the correct backplane SKU for each interface type; confirm with your Lenovo server BOM. For high-density IP camera recording builds where rear NVMe slots are used for write-intensive video streams, pair this kit with U.2 NVMe drives rated for mixed-use or write-intensive workloads — consumer-grade NVMe SSDs are not appropriate for 24/7 surveillance write loads.

Installation Notes

Installation requires access to the rear of the SR650 V4 chassis and is a field-installable option, but Lenovo option kits of this class typically require removing the top cover and routing the included NVMe signal and power cables to the system board NVMe connectors. Confirm that the SR650 V4 system board has available rear NVMe ports enabled in UEFI before installing — some base configurations ship with rear NVMe ports disabled by default. Consult the SR650 V4 server option installation guide for torque specs on backplane mounting screws and cable routing clearances before commissioning.