Lenovo 4X97A59811 SR650 V2 2.5" Front Backplane 2 SAS/SATA Cable Kit
Overview
The Lenovo 4X97A59811 is a factory-new SAS/SATA cable kit designed specifically for the front drive backplane 2 (BP2) position in the ThinkSystem SR650 V2 server — the second 2.5" drive bay group that expands storage capacity beyond the primary backplane. If you are expanding or replacing the cable routing between the SR650 V2's RAID/HBA controller and a secondary 2.5" front backplane assembly, this is the part that completes the signal path. Without the correct OEM cable kit, the controller cannot address BP2 drives, leaving installed storage invisible to the system. Part number 4X97A59811 appears in the Lenovo SR650 V2 hardware maintenance and configuration documentation as the discrete cable option for this backplane position — not a universal fit, not a third-party substitute.
Compatibility
Designed for the Lenovo ThinkSystem SR650 V2 rack server platform. Specifically routes signal between the onboard RAID adapter or HBA and the secondary 2.5" front hot-swap drive backplane (BP2 position). Compatible drive interfaces are SAS and SATA — this kit supports both signal types over the same cable assembly, consistent with the SR650 V2's mixed-drive bay configurations. This cable kit is not interchangeable with SR650 (Gen 1), SR630, SR650 V3, or other ThinkSystem platforms; backplane connector layouts and cable lengths differ by chassis generation. Verify your server's backplane topology against the Lenovo SR650 V2 server components documentation before ordering. Weighing 0.18 lb and measuring 9.50 × 6.10 × 2.30 in, the kit ships in a compact form factor consistent with a pre-routed, connector-terminated cable assembly.
Installation Notes
Route the cable per the SR650 V2 hardware maintenance manual — cable routing paths in 2.5" configurations are tightly managed to preserve airflow across the front drive bays. Verify backplane connector keying before seating; SAS/SATA connectors are directionally keyed but can be forced incorrectly under pressure. Power down and ground the system fully before handling any backplane cable. No special tooling is specified for this kit beyond standard ESD precautions appropriate for a rack server internal cable replacement.
