Lenovo 4XC7A95508 Thinksystem NVIDIA CONNECTX-7 NDR400 Osfp 1-PORT PCIE GEN5 VPI Adapter

Lenovo 4XC7A95508 ConnectX-7 NDR400 OSFP Single-Port PCIe Gen5 VPI Adapter

Overview

The 4XC7A95508 is a single-port OSFP PCIe Gen5 VPI (Virtual Protocol Interconnect) network adapter built on the NVIDIA ConnectX-7 silicon. It targets high-throughput server interconnect scenarios — HPC clusters, AI/ML training fabrics, and dense storage architectures — where NDR400 InfiniBand or 400GbE bandwidth is the binding constraint. The PCIe Gen5 host interface eliminates the bus as a bottleneck, delivering the full bidirectional bandwidth the ConnectX-7 chipset can sustain. Manufactured in Mexico, the card ships at 1.00 lb, consistent with a full-height PCIe add-in form factor.

Compatibility

Designed for the Lenovo ThinkSystem server portfolio. Target platforms include PCIe Gen5-equipped ThinkSystem SR-series and ST-series rack and tower servers — specifically those with Gen5 x16 slots capable of physically and electrically accommodating a full-height, full-length adapter. Verify slot availability and system firmware support against the Lenovo ServerProven compatibility matrix before ordering; not all ThinkSystem configurations expose Gen5 slots or carry the required MLNX OFED driver support out of the box. The OSFP port requires an OSFP-to-OSFP or OSFP-to-QSFP112 cable or transceiver — confirm your switch fabric and cable plant support NDR400 signaling before deployment. VPI mode allows runtime switching between InfiniBand and Ethernet protocols without a hardware swap, which matters when your fabric topology evolves or you're running mixed workloads on the same card.

Installation Notes

Install into a PCIe Gen5 x16 slot. Downward slot compatibility (Gen4, Gen3) will train but will not deliver NDR400 line-rate throughput — if full bandwidth is required, confirm Gen5 slot availability in the target chassis before purchase. OSFP is a high-density, high-power connector; verify the system's auxiliary power budget and airflow path support the ConnectX-7 thermal envelope. Driver and firmware provisioning should follow Lenovo's recommended MLNX OFED or inbox driver path for the specific OS and ThinkSystem platform.