Lenovo 4XH7A61131 SR655 4-Bay Rear Backplane Cable Assembly

Overview

The Lenovo 4XH7A61131 is a rear backplane cable assembly designed for the ThinkSystem SR655 server platform. It supports both 2.5-inch and 3.5-inch drive form factors across a 4-bay rear backplane configuration, using an X40 cable interface — meaning it is a purpose-built, factory-matched component for SR655 deployments that require rear-accessible storage expansion.

If your SR655 build includes a rear drive cage, this cable is the connector between that cage's backplane and the server's storage controller or expander. Without it, the rear bays are electrically disconnected regardless of physical installation. Sourced factory-new with no grey-market or parallel-import exposure.

Key Features

• Dual Drive Form-Factor Support: Compatible with both 2.5-inch and 3.5-inch drive sleds in the rear 4-bay cage — no separate cable SKU needed per drive size, which matters during mid-project storage changes or upgrades.
• X40 Interface: The X40 cable designation matches the SR655's native controller and expander pinout, ensuring signal integrity without adapters or workarounds that introduce failure points.
• Rear Bay Orientation: Targets the rear backplane specifically — not the front cage — so verify your SR655 chassis configuration includes a populated rear drive cage before ordering.
• Factory-Matched Component: Engineered to Lenovo's internal routing and connector tolerances for the SR655 chassis, reducing the risk of cable-length or connector interference issues common with third-party alternatives.
• 10 lb Shipping Weight: Packaged at 10 lb — factor this into freight planning for bulk server build orders where multiple cable kits ship together.

Integration & Compatibility

The 4XH7A61131 is a ThinkSystem SR655-specific component. It is not a universal backplane cable. Before ordering, confirm your SR655 chassis revision and rear cage configuration against Lenovo's SR655 hardware maintenance manual. Compatibility with other ThinkSystem platforms (SR650, SR630, etc.) is not established by available evidence and should not be assumed.

Frequently Asked Questions

Q: Which server platform is the 4XH7A61131 designed for?

A: The 4XH7A61131 is designed specifically for the Lenovo ThinkSystem SR655 server. It is not documented as compatible with other ThinkSystem platforms based on available evidence.

Q: Does the 4XH7A61131 support both 2.5-inch and 3.5-inch drives?

A: Yes. The product designation confirms support for both 2.5-inch and 3.5-inch drive form factors within the 4-bay rear backplane configuration.

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