Overview The HP 4X QDR Infini Band Mezzanine HCA for c-Class Blade System is based on the Mellanox Connect X-2 technology. The QDR IB HCA delivers low-latency & up to 40 Gbps (QDR) bandwidth for performance-driven server & storage clustering applications in High-Performance Computing (HPC) & enterprise data centers. Parallel or distributed applications running on multi-processor multi-core servers will benefit from the reliable transport connections, advanced multicast support & collective offload offered by Connect X-2 technology. End-to-end Quality of Service (Qo S) enables partitioning & guaranteed service levels while hardware-based congestion control prevents hot spots from degrading the effective throughput. The HP 4X QDR IB CX-2 Dual-port Mezzanine HCA card is designed for PCI Express 2.0 x 8 connectors on HP Blade System c-Class G6 server blades. Features • HP 4X QDR Infini Band Mezzanine HCA for c-Class Blade System is based on Connect X-2 technology where you get reliable transport connections, advanced multicast support & collective offload.