Lenovo 4XH7A61079 Expansion Card – ThinkSystem PCIe Gen4

What It Is

The Lenovo 4XH7A61079 is a riser card assembly designed for the ThinkSystem SR650 V2 and SR665 server platforms. It expands the chassis PCIe capability by providing three additional PCIe 4.0 slots in a x16/x8/x8 lane configuration. This option kit enables higher adapter density for compute or storage expansion within the server enclosure.

Technical Details

• Type: Riser card (PCIe expansion board)
• Slot Configuration: 3x PCIe 4.0 (x16 + x8 + x8)
• Form Factor: Fits Riser1/Riser2 positions in supported servers
• Color: Green PCB
• Compatibility: Lenovo ThinkSystem SR650 V2 and SR665
• Kit Designation: Option Kit v2 (part of the SR650 V2/SR665 accessory lineup)
• MPN: 886191

Configuration & Options

• Includes one riser card assembly with three integrated PCIe slots (x16, x8, x8)
• Designed for installation in either Riser1 or Riser2 bay of the compatible server chassis
• Supports standard PCIe 4.0 adapters (e.g., network cards, storage controllers, GPUs) with matching lane widths
• No additional cables or brackets required for standard chassis installation
• Compatible with existing ThinkSystem SR650 V2/SR665 power and cooling infrastructure

Operating Conditions

This riser card is intended for deployment inside enterprise data center server racks where the host ThinkSystem SR650 V2 or SR665 operates under controlled temperature and humidity. It is suitable for environments requiring high-bandwidth I/O expansion for virtualization, database, or high-performance computing workloads. The card is validated for continuous operation within the thermal envelope of the specified server models.