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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
The 4C57A81451 is a PCIe Gen4 x8/x8 riser card designed for the Lenovo ThinkSystem SR250 V2 rack server. It provides two x8 PCIe Gen4 slots, letting you install additional expansion cards — such as network adapters, HBAs, or storage controllers — without consuming the server's native onboard slots. At 0.35 lb and 9.60 x 6.00 x 2.20 in, it fits within the SR250 V2 chassis envelope without modification.
This riser is designed specifically for the Lenovo ThinkSystem SR250 V2 (1U rack server). It is not a universal riser — do not attempt to fit it in earlier SR250 (V1) systems or other ThinkSystem chassis; the physical connector, bracket geometry, and PCIe generation are SR250 V2-specific. Before ordering, confirm your server's chassis model against Lenovo's SR250 V2 server components compatibility matrix. The UNSPSC code 43211600 classifies this as a computer storage device component, consistent with its role in a rack server expansion architecture.
Install with the SR250 V2 powered down and unplugged. The riser slots into the designated riser cage position in the chassis — no tools are required beyond standard server servicing practice (ESD precautions apply). Ensure any PCIe cards installed into the riser do not exceed the slot's x8 electrical bandwidth or the chassis thermal envelope for the SR250 V2. Refer to the SR250 V2 server accessory installation guide for torque specs on the riser retention screw and card bracket fasteners.
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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