Lenovo 4XH7A61120 SR635 3.5-Inch SAS/SATA 4-Bay X40 Cable Kit
Overview
The Lenovo 4XH7A61120 is a factory-new cable kit designed to wire the 3.5-inch SAS/SATA 4-bay backplane to the X40 storage controller in ThinkSystem SR635 servers. If you are expanding storage or replacing damaged cabling in an SR635 chassis, this kit provides the correct OEM-matched harness so drives present cleanly to the controller without improvised adapters or signal-integrity compromises that third-party cables can introduce in dense SAS topologies.
Compatibility
This cable kit is designed for the Lenovo ThinkSystem SR635 1U rack server platform. It supports both SAS and SATA drive backplanes in the 3.5-inch, 4-bay bay configuration paired with the X40 controller. If your SR635 is configured with a different bay count, backplane type, or a non-X40 controller, verify the correct cable option number before ordering — Lenovo SR635 storage accessories are backplane- and controller-specific, and substituting an incorrect kit typically results in backplane non-detection or reduced port negotiation speeds. Consult your SR635 configuration guide or the server cable kits category to cross-reference compatible options for other bay counts.
Installation Notes
Seat all SAS/SATA connectors fully until the latch clicks — partial seating is the most common cause of drive non-detection in SAS backplane deployments. Power down and discharge the system before handling internal cabling. The 10 lb shipping weight reflects packaged contents; handle with care to avoid connector damage during transit or storage. No additional tools beyond standard server servicing equipment are required.
