SlimSAS 8X to Dual U.2 NVMe Adapter Cable - Dual NVMe Expansion

In this review the SlimSAS 8X to Dual U.2 NVMe adapter cable is evaluated for users who need to expand a single SFF-8654 port into two U.2 NVMe connections. The bottom line: this cable is for server builders, workstation users, and DIY enthusiasts who want a clean, integrated way to run two U.2 drives from one SlimSAS 8X host with reliable high-speed transmission. The review focuses on compatibility, the integrated power convenience, and real-world usage notes so prospective buyers know what to expect.

Key Features

• Dual NVMe expansion: Converts a single SlimSAS 8X (SFF-8654 74pin) interface into two independent U.2 (SFF-8639 68pin) ports so two NVMe SSDs can run simultaneously.
• Integrated power: Includes the necessary power lines for U.2 drives, reducing extra power cable clutter and simplifying installation in cramped chassis.
• High-speed stable transmission: Uses quality cabling and precision SFF-8654 and SFF-8639 connectors to support full PCIe lane bandwidth for NVMe performance.
• Resolved Broadcom compatibility: Earlier compatibility issues with Broadcom 9600-24i have been addressed, so the cable now works where it previously did not.
• Broad compatibility: Works with motherboards and PCIe adapter cards that expose an SFF-8654 74pin interface and with many enterprise and consumer U.2 drives.

Who It's For

This adapter suits system integrators, data center technicians, and advanced DIY builders who need to expand storage using U.2 NVMe drives from a single SlimSAS port without adding extra power harnesses. It is especially useful when building high-speed RAID arrays or attaching two separate NVMe drives for caching and hot storage in a server or workstation.

Those who should look elsewhere include users with only SATA ports or motherboards that lack an SFF-8654 host connector, and people who prefer M.2 adapters instead of U.2 form factor connections. Also check controller compatibility lists if you use rare or very old hardware before buying.

Pros & Cons

Pros

• Enables two independent U.2 NVMe connections from one SlimSAS 8X port for maximum flexibility.
• Integrated power lines simplify installation and improve cable management compared with separate power adapters.
• High-quality connectors and cabling deliver stable, high-speed data transfer suitable for servers and workstations.
• Compatibility problems with Broadcom 9600-24i have been resolved, improving real-world compatibility.

Cons

• Requires a host with an SFF-8654 74pin SlimSAS port, so it is not useful for systems lacking that interface.
• As a cable adapter, physical routing and space in tight chassis can still be a challenge despite integrated power.

Specifications

Product type	SlimSAS 8X to Dual U.2 NVMe adapter cable
Host connector	SFF-8654 74pin (SlimSAS 8X)
Device connectors	2 x SFF-8639 68pin (U.2 NVMe)
Integrated power	Includes power lines for U.2 drives (SATA power style connection)
Cable length	75CM
Manufacturer part	Broadcom MPN 05-60005-00, CBL-SAST-0953

Our Verdict

The SlimSAS 8X to Dual U.2 NVMe adapter cable is a practical, value-oriented solution for anyone needing two U.2 NVMe connections from a single SlimSAS port. With integrated power and corrected Broadcom compatibility, it removes common installation headaches and preserves NVMe bandwidth, making it a sensible buy for servers, workstations, and advanced DIY rigs that already have an SFF-8654 interface.

Frequently Asked Questions

Will this cable work with Broadcom 9600-24i?
The previous compatibility issue with Broadcom 9600-24i has been resolved, and it should work with that controller now.

Does the cable provide power to U.2 drives?
Yes, the cable integrates the necessary power lines for U.2 drives, eliminating the need for separate power cables in most builds.

Can I use this with M.2 NVMe SSDs?
This adapter is designed for U.2 form factor drives via SFF-8639 connectors, not direct M.2 connections, so M.2 drives would need a separate U.2 carrier or adapter to be used.