Lenovo 4M17A12791 ST250 4U Security Door

Lenovo 4M17A12791 ST250 4U Security Door

Overview

The Lenovo 4M17A12791 is a factory-new security door designed for the ThinkSystem ST250 4U rack-format server chassis. At 1.50 lb and measuring 8.00 x 18.00 x 2.50 inches, this is a direct replacement or supplemental security component that physically restricts access to the front panel and drive bays of the ST250 — a straightforward but operationally meaningful layer of physical security in shared data center environments, colocation cages, or server rooms where chassis-level intrusion is a real concern.

If you are deploying or maintaining ST250 servers in a multi-tenant facility or any space where physical access to drives and front-panel controls needs to be controlled, the 4M17A12791 is the Lenovo-sourced part for that purpose. It is not a cable management panel, a bezel cover, or a blanking plate — it is specifically designated as a security door, meaning it is intended to prevent unauthorized physical interaction with the server front.

Key Features

• 4U Rack Form Factor Fit: Engineered specifically for the ST250's 4U chassis profile — an 8.00 x 18.00 x 2.50-inch footprint means no cutting, no shimming, and no adapter hardware. It drops into place as a genuine OEM component.
• Lightweight Construction at 1.50 lb: At 1.50 lb, installation and removal for maintenance cycles does not require tools or a second technician. Practical in environments where the door is removed regularly for drive swaps or hardware audits.
• Physical Access Control at the Chassis Level: Adds a tangible barrier between front-panel controls and drive bays and anyone walking past the rack — relevant in compliance frameworks that require documented physical security controls at the device level.
• Genuine Lenovo Component: Sourced through the Lenovo supply chain as part number 4M17A12791, ensuring fit and finish match the original ST250 chassis tolerances. Aftermarket alternatives for server doors frequently introduce fit issues that compromise the locking mechanism.

Integration and Compatibility

The 4M17A12791 is designed for the Lenovo ThinkSystem ST250 platform. If you are managing a fleet of ST250 units across a server hardware deployment, confirm your specific ST250 sub-model against Lenovo's parts compatibility matrix before ordering — the ST250 product line spans multiple generations and chassis revisions. This part number corresponds to the 4U security door specifically; do not substitute blanking panels or front bezels, which serve different purposes and use different mounting points.

For broader rack infrastructure planning, pair this with appropriate physical access control at the rack and room level — a chassis door alone is one layer of a physical security program, not a complete solution.

Frequently Asked Questions

Q: What server model is the Lenovo 4M17A12791 compatible with?

A: The 4M17A12791 is a security door component for the Lenovo ThinkSystem ST250 4U server chassis. Confirm your specific ST250 chassis revision against Lenovo's official parts compatibility documentation before ordering.

Q: What are the dimensions and weight of the 4M17A12791?

A: The 4M17A12791 measures 8.00 inches (L) x 18.00 inches (W) x 2.50 inches (H) and weighs 1.50 lb.

Q: Is this a replacement part or an optional upgrade?

A: The 4M17A12791 is a Lenovo-sourced security door — it can serve as a direct replacement for a lost or damaged original door, or as an added security component if the ST250 chassis was deployed without one.

Q: Does the 4M17A12791 include a lock mechanism?

A: Available evidence from the distribution feed does not specify lock details. Contact Lenovo or a pre-sales engineer to confirm locking hardware compatibility with your ST250 chassis configuration.

James Everett

The 4M17A12791 is one of those parts that does not make the procurement list until someone needs it urgently — a missing or damaged security door on an ST250 in a compliance-sensitive environment creates an audit finding fast. At 1.50 lb and 8.00 x 18.00 x 2.50 inches, it is a precise fit for the ST250 4U chassis and is not interchangeable with blanking panels or generic bezel covers from other server lines.

Technical Highlights:

• Chassis-Specific Fit (4U, 8.00 x 18.00 x 2.50 in): The ST250 chassis door tolerances are tight — an aftermarket or wrong-generation door often binds or leaves a gap at the latch point, which defeats the physical security purpose entirely.
• 1.50 lb Field Weight: Light enough for a single technician to swap during a maintenance window without staging extra personnel, which matters in tightly scheduled colocation environments.
• Genuine Lenovo Part (4M17A12791): Sourced through the Lenovo distribution channel, which means the part number is traceable and the fit is guaranteed to the original chassis spec — relevant when the door is part of a physical security audit trail.

Deployment Considerations:

• Verify your specific ST250 chassis generation before ordering — Lenovo has revised the ST250 across multiple releases and physical panel components are not always cross-compatible between generations.
• Evidence does not confirm whether a keyed lock cylinder is included or sold separately — clarify with a pre-sales engineer if the locking function is required for your compliance framework.

Best fit for ST250 deployments in colocation facilities, shared server rooms, or regulated environments (healthcare, finance) where documented physical access control at the chassis level is part of the security posture review.