The Usb 3.0 Gigabit Ethernet Adapter gives you the ability to add a Gigabit Ethernet port to your laptop or MacBook though a single Usb 3.0 Type-a port, supporting 10/100/1000 Mbps Ethernet and is fully compatible with Ieee 802.3/az/u/ab/x standards. This ethernet adapter provides full gigabit bandwidth and offers backward compatibility with Usb 2.0. It also supports features such as IPv4/IPv6/TCP/Udp packet Checksum Offload Engine (Coe) and TCP Large Send Offload to reduce the load on your Cpu.