Category 6 RJ45 Cable. Backwards compatible with Cat 5e and Cat 5 environment. Up to 1.0 Gbps transmission speed with increased frequencies of up to 250 MHz. Slim and flat profile helps avoid tangles and save space. Ultra Slim and Flat Profile. At a thickness of just 1mm, the Cat 6 Flat Network Ethernet cables are perfectly camouflaged underneath carpets, walls, or even behind furniture.