HP 817745-B21 Ethernet Adapter, Interface PCI Express 3.0 x8, 10Gb Ethernet, FF FlexibleLOM, Data Transfer Rate 10GB/s, Ports-2. The HP Ethernet 10GBASE-T 2-port 535 Adapters utilize CAT 6A cabling with distances up to 100 meters and is backward compatible to existing 1GBASE-T infrastructure.