Lenovo 4XH7A09842 SR655 PCIe x16/x16 Riser 3 Full-Height Kit
Overview
The Lenovo 4XH7A09842 is a PCIe Riser 3 kit designed for ThinkSystem SR655 servers that need additional full-height expansion card capacity. It provides dual x16 PCIe slots via a riser configuration — relevant when your SR655 build requires a third riser position to seat high-bandwidth cards such as additional GPUs, HBAs, or network adapters that can't be accommodated by the base riser configuration. The kit ships ready to install into the designated Riser 3 bay, extending the server's expansion headroom without requiring chassis modification.
Compatibility
The 4XH7A09842 is designed specifically for the Lenovo ThinkSystem SR655 rack server platform. It occupies the Riser 3 position and supports full-height add-in cards across both x16 PCIe slots — confirm your SR655 chassis revision supports a third riser bay before ordering, as not all SR655 configurations expose the Riser 3 slot. This kit is not cross-compatible with SR650, SR630, or other ThinkSystem models; riser assemblies are chassis- and generation-specific.
Installation Notes
Installation requires seating the riser assembly into the Riser 3 bay and connecting the PCIe interposer to the system board's corresponding connector. Full-height cards installed into this riser must clear the chassis airflow baffle — verify card length and cooling compatibility against your SR655 chassis spec before populating slots. Consult the server accessories documentation for your specific SR655 revision to confirm riser bay availability and any torque or retention requirements for the riser latch. Weight is 2.00 lb; chassis dimensions of the kit are 13.00 x 9.00 x 6.00 in, so confirm adequate packaging space when shipping pre-populated.
