What is the Mellanox MCX454A-FCAT?
The Mellanox MCX454A-FCAT is a QSFP optical transceiver module, listed by the manufacturer as "PCI Express 3.0 x8 - 56 Gbit/s - 2 x Total Infiniband Port(s) - QSFP - Plug-in Card". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.