Use the Rocstor reliable premium portable external hub to expand your USB 3.0 ports and connect to any network with its built-in GbE 10\/100\/1000 port. This Rocstor Hub is compatible with any Mac or PC and adds three USB 3.0 (5Gbps) ports and one Gigabit Ethernet (GbE) port to your host computer such as MacBook (with Type-A Connection), Dell notebooks, and any other host computer with USB 3.0 port. This device is essential for users with limited port availability. This Rocstor Hub is light weight and perfect for travel usage. Use your Rocstor premium cable Worry free which is backed by 2 Year Limited Warranty.