Product Description Mellanox CX416A ConnectX-4 50Gbe Dual-Port QSFP EDR PCi-Express 3.0 x16 Network Adapter Card MCX416A-GCAT. Model : CX416A Part Number : MCX416A-GCAT Model Name : ConnectX-4 50GbE Data Transfer Rate : 56GB/s Input/Output Ports : 2x QSFP Interface : PCi-Express 3.0 x16 Form Factor : Low Profile Bracket/Profile Type : Low Profile Bracket Type : Network Adapter Card. All unauthorized, no reason, etc.