Lenovo 4C57A81451

Overview

The Lenovo 4C57A81451 is a PCIe Gen4 riser card designed specifically for the ThinkSystem SR250 V2 server. It provides two PCI Express 4.0 x8 slots, allowing you to expand your server’s capabilities by adding high-bandwidth network or storage cards. This riser card fits inside the chassis via a dedicated riser connector and supports full-height PCIe add-in cards, ensuring compatibility with a wide range of expansion devices.

By leveraging PCIe Gen4 technology, it doubles the data throughput compared to Gen3, which means your expansion cards can operate at faster speeds and handle more demanding workloads. This makes it a practical upgrade for administrators looking to increase I/O capacity or add new functions without altering the server’s physical footprint.

Key features

• Two PCIe 4.0 x8 slots that deliver higher bandwidth for demanding network and storage applications
• Designed to fit seamlessly inside the ThinkSystem SR250 V2 chassis using the system’s dedicated riser connector
• Supports full-height PCIe add-in cards, providing flexibility for various expansion cards
• Enables easy scaling of server capabilities by adding additional network interfaces or storage controllers
• Maintains proper signal routing and alignment with the SR250 V2 layout for reliable performance

Key specs

• Interface: PCI Express Gen4
• Slots: 2 x PCIe 4.0 x8
• Compatibility: Lenovo ThinkSystem SR250 V2 server
• Form factor: Full-height PCIe add-in card support
• Connection: Dedicated riser slot on system board

Connectivity and compatibility

This riser card is engineered exclusively for the Lenovo ThinkSystem SR250 V2 platform, ensuring a perfect fit and optimal signal integrity. It connects directly to the system board’s dedicated riser slot, allowing you to add expansion cards without modifying the server chassis or other components. The two PCIe 4.0 x8 slots support a wide range of full-height cards, including network adapters and storage controllers, making it a versatile choice for enhancing your server’s connectivity and performance.

Ideal uses and environments

The 4C57A81451 riser card is well suited for IT administrators who need to expand the capabilities of their ThinkSystem SR250 V2 servers over time. It works well in environments where additional network segmentation or increased storage capacity is required, such as small to medium business data centers or remote office setups. By enabling higher bandwidth expansion cards, it supports workloads that demand faster data transfer rates and more robust I/O performance without increasing the server’s physical size.

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