Lenovo 7C57A03951

Overview

The Lenovo 7C57A03951 is a full-height PCIe riser kit designed to expand the input/output capabilities of compatible Lenovo servers. It provides three PCIe x8 slots arranged in an x8 x8 x8ML2 layout, enabling the installation of multiple expansion cards to enhance system performance and connectivity. This riser kit is ideal for rack-mounted server configurations that require dense I/O expansion without altering the base server chassis.

By connecting directly to the motherboard, it ensures stable signal integrity and consistent operation across all three PCIe lanes, supporting high-throughput data transfer for demanding server workloads.

Key features

• Three PCIe x8 slots that allow simultaneous use of multiple expansion cards for increased system I/O capacity
• ML2 form factor tailored specifically for Lenovo server integration, ensuring compatibility and ease of installation
• Full-height riser design that fits standard rack-mounted chassis without requiring modifications
• Direct motherboard connection that maintains signal quality and bandwidth across all PCIe lanes
• Supports high-bandwidth data flow to meet the demands of data-intensive applications and server environments

Key specs

• PCIe slots: 3 x PCIe x8 lanes
• Form factor: ML2, full-height riser
• Compatibility: Designed for Lenovo rack-mounted servers
• Interface: Direct connection to motherboard PCIe slot

Connectivity and compatibility

This riser kit is engineered to integrate seamlessly with Lenovo server platforms that support the ML2 form factor. It expands the number of PCIe x8 slots available, allowing users to add network cards, storage controllers, or other PCIe-based expansion cards without changing the server chassis or motherboard. Its full-height design fits within standard rack-mounted server cases, making it a practical choice for data centers and enterprise environments.

Ideal uses and environments

The Lenovo 7C57A03951 riser kit is well suited to IT professionals and system builders who need to increase PCIe expansion capacity in dense server setups. It works effectively in data centers, virtualization hosts, and high-performance computing nodes where multiple add-in cards are required for networking, storage, or specialized processing tasks. This riser kit helps maximize available space while maintaining reliable data throughput, making it a strong option for scaling server I/O without extensive hardware changes.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more