Lenovo 4XH7A61099 SR550 3.5 Sas/sata 12-BAY X40 CBL KIT

Lenovo 4XH7A61099 SR550 3.5-Inch 12-Bay SAS/SATA X40 Cable Kit

Overview

The Lenovo 4XH7A61099 is a factory-configured cable kit designed to wire the 12-bay, 3.5-inch SAS/SATA drive backplane in ThinkSystem SR550 servers using the X40 backplane connector scheme. If you are expanding storage capacity in an SR550 or replacing damaged internal cabling, this kit provides the correct routing harness so that all 12 drive bays maintain proper signal continuity to the RAID or HBA controller — without improvising with generic SAS cables that may not conform to Lenovo's routing and strain-relief requirements inside the chassis. The kit ships at 10 lb, accounting for the full harness assembly.

Compatibility

This cable kit is purpose-built for the Lenovo ThinkSystem SR550 2U rack server. It supports both SAS and SATA drive populations, making it compatible whether you are running SAS HDDs, SATA HDDs, or a mixed configuration in the 3.5-inch 12-bay backplane enclosure. The X40 designation refers to the specific backplane-to-controller cable routing variant — confirm your SR550's backplane model and controller slot configuration before ordering, as Lenovo offers multiple cable kit variants for the SR550 platform depending on backplane revision and installed storage controller.

Installation Notes

Cable routing inside the SR550 chassis follows Lenovo's defined paths to maintain adequate airflow and avoid obstruction of the mid-plane and fan zone. Use genuine Lenovo replacement cables to ensure connector latch alignment with the backplane ZIF or direct-attach headers — third-party cables with differing latch profiles can cause intermittent drive detection under vibration. Refer to the SR550 Hardware Maintenance Manual for the chassis-specific routing diagram corresponding to your backplane and RAID adapter combination prior to disassembly.