Lenovo 4TA7A91720 Thinksystem SD550 V3 Riser KIT for 2CPU

Lenovo 4TA7A91720 ThinkSystem SD550 V3 Riser Kit for 2CPU

Overview

The Lenovo 4TA7A91720 is a riser kit designed for dual-CPU configurations in the ThinkSystem SD550 V3 server platform. When deploying a second processor in an SD550 V3 node, the riser assembly is required to support the expanded PCIe connectivity and internal bus routing that a two-socket configuration demands — without it, a second CPU installation is mechanically incomplete. This is a hardware expansion component, not a software license or service.

Compatibility

The 4TA7A91720 is designed specifically for the Lenovo ThinkSystem SD550 V3 server node in 2CPU (dual-socket) configurations. It is not a universal riser and should not be assumed compatible with other SD550 generations (SD550 or SD550 V2) or other ThinkSystem node families such as the SD530, SD650, or SD665. Verify the target chassis generation before ordering — Lenovo server nodes frequently change riser form factors between generations.

Installation Notes

Installation requires access to the SD550 V3 node interior. The riser kit weighs 10.00 lb, which is substantial for a riser assembly — confirm your rack and node slide capacity accommodates the additional weight before installation. Country of origin is Mexico. Follow Lenovo's SD550 V3 hardware maintenance guide for proper seating, torque specifications, and ESD precautions; improper installation of riser components can damage PCIe lanes on the system board.