Dell Mellanox ConnectX Dual Port InfiniBand Mezzamine I/O Card is PCI Express Base 2.0 compliant and is backwards compatible with 1.1. It has DDR Data Rate and RDMA Support for all ports. Fits into Dell PE M600 M605 M610 B or C Expansion Slots and M710 M710HD M905 M910 M1000e.