Lenovo 4XH7B08871 SR850 V4 G5 Riser X16/X16 FH

Lenovo 4XH7B08871 SR850 V4 G5 Riser X16/X16 Full-Height PCIe Riser

Overview

The 4XH7B08871 is a dual PCIe x16 full-height riser card designed for the Lenovo ThinkSystem SR850 V2 and compatible server platforms. It expands the chassis expansion slot capacity by providing two full-height x16 PCIe lanes — the configuration you need when adding high-bandwidth adapters such as dual-port 100GbE NICs, GPU accelerators, or high-throughput storage controllers that require full x16 electrical bandwidth rather than a narrower riser. At 10 lb, the riser is a substantial mechanical assembly; plan for chassis clearance and proper support during installation.

Compatibility

Verified for use with the Lenovo ThinkSystem SR850 V2 server family. The G5 designation in the part name indicates the riser generation — confirm your SR850 chassis generation before ordering, as riser form factors and connector pinouts differ across generations and are not cross-compatible. This riser is not interchangeable with SR850 V3-generation risers or with other ThinkSystem chassis (SR650, SR860, SR950) that use different riser slot geometries. If your workload requires a single x16 slot or half-height form factor, a different riser option within the Lenovo server accessories line will be the correct fit.

Installation Notes

The riser installs into the designated riser cage slot on the SR850 V2 system board. Full-height adapter cards installed in this riser require adequate clearance to the chassis wall — verify adapter card length against the SR850 V2 chassis bay depth specification before purchasing expansion cards. Sourced factory-new with no grey-market or parallel-import risk; manufacturer warranty applies.