Lenovo 4XH7B08868 SR850 V4 G5 Riser X8/X16/X16 HH

Lenovo 4XH7B08868 SR850 V4 G5 Riser X8/X16/X16 HH

Overview

The Lenovo 4XH7B08868 is a half-height PCIe riser card designed for the ThinkSystem SR850 V4 G5 server platform, delivering an X8/X16/X16 slot configuration that expands PCIe expansion capacity within a constrained chassis profile. When a build requires additional PCIe adapters — GPU accelerators, NVMe storage controllers, network interface cards, or capture/processing cards — this riser slots into the SR850 V4 G5 to provide the physical lane allocation those adapters demand. The half-height form factor is a hard requirement of the SR850 V4 G5 chassis geometry; full-height risers are not interchangeable.

Compatibility

Designed exclusively for the Lenovo ThinkSystem SR850 V4 G5 rack server platform. The X8/X16/X16 lane distribution supports configurations where parallel high-bandwidth adapters — such as dual GPU cards or multi-port 100GbE NICs alongside a storage HBA — need dedicated lane allocation without contention. Verify the target SR850 V4 G5 chassis revision and riser bay assignment against Lenovo's ThinkSystem configurator before ordering; SR850 generations prior to V4 G5 use different riser assemblies and are not compatible. For builds requiring PCIe HBAs or network adapters, confirm the slot width and lane count match the adapter's minimum requirement — an X16 card seated in an X8 slot will operate at reduced bandwidth.

Installation Notes

This riser ships at 10 lb, which reflects the assembled riser cage and bracket assembly — handle with care during installation to avoid flex stress on the PCIe edge connector. Country of origin is Mexico. Installation follows standard Lenovo ThinkSystem field-replacement procedures: power down, discharge static, seat the riser firmly into the system board riser connector, and secure the retention bracket before seating any adapter cards. Consult the SR850 V4 G5 hardware maintenance manual for torque specifications on bracket fasteners and the correct riser bay slot assignment for this X8/X16/X16 configuration.