Lenovo 4X97A80403 SR645 6+4ANYBAY 2.5 BP NVME CBL V2

Lenovo 4X97A80403 SR645 6+4 AnyBay 2.5-Inch Backplane NVMe Cable V2

Overview

The Lenovo 4X97A80403 is a factory-new, genuine NVMe backplane cable designed for the ThinkSystem SR645 server platform, specifically supporting the 6+4 AnyBay 2.5-inch drive backplane configuration. If you are expanding or restoring NVMe drive connectivity on an SR645, this is the direct replacement or supplemental cable required to wire the backplane to the system board. The V2 designation indicates this is the current-revision part — verify your SR645 generation before ordering to confirm fitment against your existing backplane and HBA/controller layout.

This cable carries the UNSPSC code 43211600, classifying it within the computer storage device accessories category. At 2.00 lb, the physical weight is consistent with a multi-connector server cable assembly. The NVMe interface designation confirms this cable is specific to NVMe-protocol drive paths — it does not serve SAS or SATA backplane connections on the same platform.

Key Features

• NVMe Interface: Wired exclusively for NVMe-protocol drive paths, so the full bandwidth of NVMe SSDs reaches the system controller without a SAS expander bottleneck — relevant when deploying high-IOPS NVMe storage in the SR645.
• 6+4 AnyBay 2.5-Inch Configuration: Supports the AnyBay backplane layout that accepts both NVMe and SAS/SATA drives in the same bays — this cable handles the NVMe signal path within that mixed-protocol environment, giving you flexibility to populate bays with whichever drive type the workload demands.
• SR645-Specific Fit: Engineered to the SR645 chassis dimensions and connector positions, which means no adapters, no improvised routing — the cable seats and routes as Lenovo designed it. Using a generic or cross-platform cable in this bay configuration risks signal integrity issues or physical fitment failures.
• V2 Revision: The V2 suffix indicates a revised part — in Lenovo's cable nomenclature this typically reflects a connector, routing, or compatibility update over the original. Confirm your backplane part number supports V2 before ordering if you are replacing a V1 cable.
• Factory-New Genuine Part: Sourced as a genuine Lenovo component — not a third-party substitute. Cable integrity matters in NVMe paths where signal quality directly affects drive detection and throughput.

Integration and Compatibility

The 4X97A80403 is purpose-built for the ThinkSystem SR645 server. Compatibility depends on your specific SR645 backplane configuration (6+4 AnyBay 2.5-inch), controller or HBA installed, and whether your build uses the V2 revision backplane. Cross-reference your SR645 Configuration and Options Guide or the Lenovo ServerProven compatibility matrix before ordering. This cable is not interchangeable with SR630, SR650, or other ThinkSystem platforms without verification.

Frequently Asked Questions

Q: What server platform does the Lenovo 4X97A80403 support?

A: The 4X97A80403 is designed for the Lenovo ThinkSystem SR645, specifically the 6+4 AnyBay 2.5-inch backplane NVMe cable configuration.

Q: Does this cable support SAS or SATA drives?

A: No. The 4X97A80403 carries NVMe-protocol signal paths only. The AnyBay backplane supports mixed drive types, but this cable specifically handles the NVMe connections within that backplane.

Q: What does the V2 designation mean for the 4X97A80403?

A: V2 indicates this is the second-revision version of the cable. It may reflect connector, routing, or compatibility updates over the original. Verify your SR645 backplane revision supports V2 before ordering.

Q: Can I use the 4X97A80403 in a ThinkSystem SR650 or SR630?

A: Compatibility with other ThinkSystem platforms is not confirmed by available evidence. This cable is specified for the SR645. Cross-reference Lenovo's ServerProven guide for your platform before substituting.

Q: What is the weight of the 4X97A80403?

A: The cable assembly weighs 2.00 lb per the Lenovo distribution specification.

James Everett

The 4X97A80403 is a detail that matters more than its part number suggests — an SR645 with a 6+4 AnyBay backplane that is missing or has a failed NVMe cable will not detect drives on those NVMe paths regardless of how the controller is configured. If you are troubleshooting drive detection failures on an SR645 NVMe bay, this cable is a logical first replacement candidate before assuming a backplane or controller fault.

Technical Highlights:

• NVMe Interface: Dedicated NVMe signal path — no shared bandwidth with SAS/SATA lanes, so NVMe drive performance is not throttled by expander overhead.
• AnyBay 6+4 Layout: The 6+4 bay split gives the SR645 flexibility to mix NVMe and SAS/SATA in the same backplane; this cable handles the NVMe half of that equation.
• 2.00 lb Assembly Weight: At 2.00 lb, this is a multi-connector harness — handle with care during routing to avoid connector stress on the backplane header.

Deployment Considerations:

• Confirm your SR645 uses the V2-compatible backplane before ordering — V1 and V2 backplane revisions may use different connector configurations, and a mismatch means the cable will not seat correctly.
• The evidence does not confirm cross-platform compatibility with other ThinkSystem models — do not assume this cable fits SR630, SR650, or SR665 without consulting Lenovo's official parts compatibility documentation.

This part is the right order for an SR645 operator running a 6+4 AnyBay NVMe configuration who needs to restore or expand NVMe drive connectivity — not a generic server environment where backplane revision is unknown.