Lenovo 4M17A11753 ST650 V2 3.5 SS SATA 4-BAY BP

Lenovo 4M17A11753 ST650 V2 3.5-Inch 4-Bay SATA Backplane

The Lenovo 4M17A11753 is a 4-bay, 3.5-inch SATA solid-state backplane designed for the ThinkSystem ST650 V2 tower server — the right component when you need to expand or replace storage bay infrastructure within that platform without compromising the server's hot-swap architecture. At 10 lb, this is a substantial backplane assembly built for the ST650 V2's internal chassis geometry.

Overview

Server backplanes are often overlooked until they fail or until a storage expansion hits a physical limit. The Lenovo server components lineup treats the backplane as a first-class platform element: the 4M17A11753 is matched to the ST650 V2's drive cage dimensions and SATA signaling paths, which means you get predictable integration rather than the guesswork that comes with third-party alternatives. UNSPSC classification 43211600 (computer storage devices) confirms this is a genuine storage infrastructure component, not a peripheral or accessory bracket.

Key Features

• SATA Interface: SATA connectivity covers the widest range of enterprise 3.5-inch drives — spinning HDDs and SATA SSDs alike — giving you flexibility in drive selection without requiring SAS controllers or additional HBAs. If your storage strategy leans on cost-efficient high-capacity HDDs (which still dominate warm and cold archival tiers), SATA is the correct interface choice here.
• 4-Bay Capacity: Four 3.5-inch bays in a single backplane assembly means you can populate up to four drives in this expansion zone. For a network video recorder or surveillance server context, four large-capacity SATA drives can support weeks of continuous high-definition recording across dozens of channels — storage density that matters in 24/7 environments.
• ST650 V2 Platform Match: This backplane is engineered to the ST650 V2 chassis spec. Fitting a non-platform backplane into a server introduces mechanical and signal-integrity risks; the 4M17A11753 eliminates that risk by being a native component. If you're expanding an existing ST650 V2 deployment or replacing a failed backplane, this is the correct part.
• 3.5-Inch Drive Form Factor: The 3.5-inch bay format accommodates the highest-capacity drives currently available in the SATA ecosystem — up to 20TB+ per bay in some configurations — which matters when storage retention requirements are measured in days or weeks rather than hours. Check server storage options to pair compatible drives.
• Verified Weight (10 lb): At 10 lb, this assembly includes the full backplane PCB, drive connectors, and mounting hardware. Plan for this weight during rack or tower maintenance — it's not a one-hand installation inside a live chassis.

Integration and Compatibility

The 4M17A11753 is specifically scoped to the ThinkSystem ST650 V2 platform. Before ordering, confirm your ST650 V2 chassis revision and existing backplane configuration against Lenovo's ThinkSystem server line documentation — Lenovo occasionally revises bay configurations between chassis generations, and the ST650 V2 designation should match your server's model badge and part number, not just its name. For environments building out server storage infrastructure around a surveillance or data capture workload, verify that your host bus adapter or onboard controller supports the number of SATA ports this backplane requires before installation.

Frequently Asked Questions

Q: What server platform is the 4M17A11753 compatible with?

A: The 4M17A11753 is designed for the Lenovo ThinkSystem ST650 V2 tower server. It is not a universal backplane — confirm your server model before ordering.

Q: What drive interface does the 4M17A11753 use?

A: This backplane uses the SATA interface, supporting both SATA HDDs and SATA SSDs in the 3.5-inch form factor.

Q: How many drives can this backplane support?

A: The 4M17A11753 supports four 3.5-inch drives in a single backplane assembly.

Q: What does the 4M17A11753 weigh?

A: The assembly weighs 10 lb — account for this during chassis installation or replacement work.

Q: Is the 4M17A11753 compatible with SAS drives?

A: No. This is a SATA backplane. SAS drives require a SAS backplane and compatible HBA — the 4M17A11753 does not support SAS.

Marty Allison

The 4M17A11753 is a platform-specific component — and that specificity is the point. When you're maintaining or expanding a ThinkSystem ST650 V2 deployment, using a non-Lenovo or cross-generation backplane introduces mechanical fit uncertainty and potential signal-integrity issues on the SATA bus. This part eliminates that uncertainty.

Technical Highlights:

• SATA Interface: Covers the full spectrum of 3.5-inch enterprise drives — SATA HDDs up to 20TB+ and SATA SSDs — without requiring additional HBAs or SAS controllers, keeping your BOM simple.
• 4-Bay Density: Four bays in a single assembly is the right density for a compact surveillance server or edge recording node where you want significant local storage without scaling to a rack-mount platform.
• 10 lb Assembly Weight: This is a full PCB-and-connector assembly, not a lightweight bracket. Budget two-person handling when working inside the ST650 V2 chassis, particularly if the server is partially populated with drives during a backplane swap.

Deployment Considerations:

• Verify your ST650 V2 chassis revision matches this backplane's physical mounting pattern — Lenovo server generations occasionally revise internal bay geometry even within the same product name.
• The SATA interface caps drive-level throughput compared to SAS or NVMe; for workloads demanding sequential write speeds above ~500 MB/s per drive, this backplane is not the correct choice — evaluate SAS or NVMe alternatives in the ST650 V2 platform instead.

Best positioned for ST650 V2 deployments running high-capacity SATA HDD arrays in 24/7 surveillance recording or warm-tier data archival — environments where raw capacity and platform compatibility matter more than peak drive throughput.