Very Good USB 3.0 Gigabit Ethernet Adapter. Works fine on PC, but hit and miss on Mac running OSX 10.8.5 at the time of writing. On restart the Ethernet connection would drop, only disconnecting and reconnecting the USB Hub would reconnect Ethernet/Internet.The adapter essentially uses a USB port on your PC and gives you an Ethernet (RJ45 connection). Ideal for computers which do not have an Ethernet/internet port. I addition you get fast gigabit network data transfer speeds, if your PC has a gigabit network card. With 3 x USB 3.0 ports (backwards compatible to USB 2.0) you can connect multiple USB devices, (may not work with very large USB HD’s such as 2TB plus, they often need the hub to be powered). Because this hub is not a powered device it is not recommended for charging devices.The design is nice, with green LED on top to show when connected, and LEDs at the Ethernet port to show you when connected and at what speed. Comes with a 1.6 Metre cable and user guide. Also, nice simple packaging.For the price a good Ethernet adapter / USB hub. But in my experience only for PC.