The Rocstor Premium USB 3.0 to Ethernet adapter enables you to connect this adapter to your existing USB 3.0 (2.) port and gain a fast and reliable Gigabit Ethernet RUJ45 NIC adapter. Supporting up to Gigabit Ethernet data speeds, the adapter lets you enjoy faster streaming of online content. This versatile Ethernet adapter does not require any external power supply. You can easily connect the adapter to any available USB 3.0 (2.0 Compatible) port, then install the included software driver and connect a Cat5 cable from the adapter to an RJ45 Network port. Enjoy speeds of up to 1000Mbps file transfer between your device or host computer with the most reliable connection. Use this adapter with confidence with any of the newer computers that has no internal Ethernet port. Use this adapter with confidence..