Used on Macs, this hub with 3 USB 3.0 Gigabit RJ45 socket is such a practical accessory. In order to expand the uses on machines with ports become counted, this hub is perfect. On a MacBook Air, so I can have internet when there is no wifi available while enjoying 2 additional USB ports. So, I plugged USB keys and hard drives simultaneously without any trouble or disconnection speed. In addition, this accessory is well made with aluminum finish, light weight but a good finish of the connector.