Image coming soon
Product images are provided for reference and may not represent the exact model, configuration, or included components.

No Bots, Just Experts

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.

Get Free Pre-Sales Support Buy Design Hours ($175/hr)
Description

Lenovo 4XH7A91474 SR650 V3 PCIe Riser 1/2 Expansion Kit

Overview

The Lenovo 4XH7A91474 is a PCIe Gen 5 riser kit designed to expand the I/O capacity of ThinkSystem SR650 V3 rack servers. It delivers an x16/x8/x8 slot configuration across Riser 1 and Riser 2 positions, giving system architects room to install high-bandwidth add-in cards — GPU accelerators, NVMe HBAs, 100GbE NICs, or capture cards — without compromising bandwidth on adjacent slots. If your SR650 V3 build is running short on full-speed PCIe lanes for demanding workloads, this kit is the slot expansion path the platform is designed to support.

Compatibility

This kit is designed exclusively for the Lenovo ThinkSystem SR650 V3 server platform. The x16/x8/x8 slot layout is specific to the SR650 V3 chassis geometry — it is not interchangeable with SR650 (Gen 1/2), SR630 V3, or other ThinkSystem 2U platforms. Verify your SR650 V3 configuration guide to confirm which riser bay positions (Riser 1 and Riser 2) are populated and whether your chassis revision accepts the V2 riser revision before ordering. Consult Lenovo's SR650 V3 server components configuration matrix to validate card slot assignments against your planned add-in card TDP and PCIe lane budgets.

Installation Notes

Installation is performed inside the SR650 V3 chassis with the server powered off and riser assemblies seated into the designated Riser 1/2 bays. Confirm your SR650 V3 firmware and UEFI are current before commissioning new riser hardware, as PCIe bifurcation settings may need to be adjusted in the UEFI configuration utility to match the x16/x8/x8 lane split. The kit weighs 1.00 lb and is manufactured in Mexico.

Expert Analysis
Specifications
Weight: 1.00 lb
Country Origin: MX
Country Of Origin: MX
Unspsc Code: 43211600
Q&A
Reviews
Product Video
Have Questions?

Lenovo 4XH7A91474 SR650 V3 X16/X8/X8 G5 RISER1/2 KIT V2

$1,128.99
Add to Cart

RELATED PRODUCTS

Looking for more Lenovo products? Shop the full Lenovo catalog →

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources
!