Recently I upgrade to 4Gbps broadband and I used the CCR2004-1G-12S+2XS as router. Here is the network architecture. ONT-----CCR2004-----Mellanox 6012------PC(Windows 10, 1Gbps Intel 212 on motherboard and Mellanox MCX454A-FCAT at 40Gbps)、Mac(Hacintosh, Intel 10Gbps)、NAS (Linux, 40Gbps Mellanox CX35...