Lenovo 4X97B03879 SR650 V4 Rich Storage PWR CBL W/ CFF EXP

Lenovo 4X97B03879 SR650 V4 Rich Storage Power Cable with CFF Expander

Overview

The Lenovo 4X97B03879 is a factory-designated power cable assembly engineered for the ThinkSystem SR650 V4 server platform, specifically supporting rich storage configurations that include a Compact Form Factor (CFF) expander. If you are expanding internal storage capacity on an SR650 V4 — adding drive backplanes or a CFF storage expander — this cable is the OEM interconnect that routes power correctly within that chassis. It is not a universal cable; it is a platform-specific assembly designed to fit the SR650 V4's internal power routing layout without modification.

Sourced direct from distribution as a genuine Lenovo part, the 4X97B03879 ships factory-new from Mexico (country of origin: MX) and carries a shipping weight of 10.00 lb — consistent with a bundled cable kit rather than a single thin wire, which aligns with the multi-connector requirements of a rich storage + CFF expander configuration.

Key Features

• SR650 V4 Platform Fit: Designed specifically for the ThinkSystem SR650 V4 chassis in rich storage mode. Using a non-OEM or wrong-generation cable in this configuration risks improper connector engagement with the CFF expander's power header — a risk not worth taking on a production server.
• CFF Expander Support: The CFF (Compact Form Factor) expander enables higher drive counts within the SR650 V4's 2U footprint. This cable provides the dedicated power path the expander requires; without it, the expander cannot be commissioned.
• Factory-New Genuine Part: Shipped as a new, genuine Lenovo component — not a third-party substitute — which matters for maintaining server warranty coverage and passing data-center hardware audits.
• UNSPSC 26121624: Classified under UNSPSC code 26121624 (power cables and cord sets for electronic equipment), confirming this is a power interconnect assembly intended for internal server use.

Integration & Compatibility

The 4X97B03879 is intended for use with the Lenovo ThinkSystem SR650 V4 in rich storage configurations. Before ordering, confirm your SR650 V4's storage backplane and expander layout against Lenovo's official SR650 V4 option compatibility matrix — the SR650 V4 supports multiple storage configurations, and the correct cable assembly depends on the specific backplane and expander combination installed. This cable is not confirmed compatible with SR650 V3 or earlier SR650 generations; use Lenovo's product configurator or contact pre-sales engineering to verify fit for your specific build.

Frequently Asked Questions

Q: Which server platform is the Lenovo 4X97B03879 designed for?

A: The 4X97B03879 is designed for the Lenovo ThinkSystem SR650 V4 server in rich storage configurations that include a CFF (Compact Form Factor) expander. It is a platform-specific cable and is not confirmed for use with other server generations.

Q: What does the CFF EXP designation mean in the product name?

A: CFF EXP refers to Compact Form Factor Expander — a storage expander module used in the SR650 V4 to increase internal drive capacity. This cable provides the power connection that the CFF expander requires to operate.

Q: Is the 4X97B03879 compatible with the SR650 V3?

A: Compatibility with SR650 V3 or earlier generations is not confirmed by available evidence. Verify against Lenovo's SR650 V4 option compatibility matrix before ordering for a different platform generation.

Q: What is the shipping weight of the 4X97B03879?

A: The 4X97B03879 has a documented shipping weight of 10.00 lb, consistent with a multi-connector cable kit assembly.

Q: Is this a genuine Lenovo part or a third-party alternative?

A: This is a genuine, factory-new Lenovo part sourced through distribution — not a third-party substitute or grey-market component.

Eden Phillips

The 4X97B03879 is one of those parts that looks trivial on a BOM until it is missing — at which point your SR650 V4 rich storage build stalls, because the CFF expander has no power path without it. At 10.00 lb shipping weight, this is clearly a multi-connector cable kit, not a single pigtail, which tracks with what a rich storage + CFF expander configuration actually demands inside a 2U chassis.

Technical Highlights:

• Platform-Specific Design: Built for the SR650 V4's internal power routing geometry — connector positions, lead lengths, and strain relief are chassis-specific, which is why substituting a generic cable is not a supported path on this platform.
• CFF Expander Power Path: The CFF expander is what enables high drive counts in the SR650 V4's 2U form factor; this cable is the required power interconnect — without it the expander cannot be brought online regardless of how the backplane is wired.
• Genuine OEM Part, MX Origin: Manufactured in Mexico as a Lenovo OEM assembly, which matters for hardware audit trails in regulated environments and for maintaining server warranty coverage post-installation.

Deployment Considerations:

• Confirm your exact SR650 V4 storage configuration (backplane layout + expander model) against Lenovo's compatibility matrix before ordering — the SR650 V4 supports multiple storage topologies and not every rich storage layout uses the same cable assembly.
• Do not assume SR650 V3 compatibility: the V4 platform introduced changes to internal power routing; using a prior-generation cable risks connector mismatch with the CFF expander's power header.

This cable belongs on the parts list for any SR650 V4 deployment configured for maximum internal storage density — data center builds where the CFF expander is part of the BOM from day one, not an afterthought.