A-USBLAN-2.5G Terra-Master USB to LAN adapter A-USBLAN-2.5G The A-USBLAN-2.5G is a 2.5Gb USB to Ethernet adapter specially adapted for TerraMaster TNAS devices. Connect the Ethernet adapter to a TNAS's USB 3.0 host to obtain up to 2.5G bandwidth on your TNAS. It is backward compatible with 10/