USB Hub 2.0 4-port Ethernet adapter supports 10-BaseT and 100-BaseTX with USB interface. It consists of two parts: the hub 4-port USB 2.0 and USB adapter compactor to Fast Ethernet. They can be used separately or Fast Ethernet adapter can be connected to the USB hub and dock, so that is one piece with 3 USB connectors and an RJ45 Ethernet connector. Compatible with Windo environmentsws, Mac OS, Linux and Android tablets (no Android phones). Model white, smooth contours, with aesthetic and design similar to Apple computers. A two in one very versatile.