From left to right: Mellanox ConnectX-5 x2, Mellanox ConnectX-6 x1, Mellanox ConnectX-5, Mellanox BlueField-2 (ConnectX-6 DPU), Mellanox ConnectX-5 - bunch of network cards as I'm using that thing as a dev machine to test network cards performance, patching some opensource projects around that...