Dual functions】: usb ethernet with usb 3.0 3 ports + 1 x rj45 ethernet port with attached cable can save your desk space and the space in your bag.
★【internet tool】: allows you to connect to wired networks when wireless connectivity is inconsistent or unreliable.
★【time saving】: the data transfer speed is up to 5 gbps, which help you to fast download files, music or movie.
★【broad compatibility】: compatible with linux, mac, chrome and windows operating systems. ideally works with os computers equipped like notebooks, desktop pcs, macbook, macbook pro, mac pro / mini, imac, xps, surface pro,surface laptop.