TRENDnet’s USB (Universal Serial Bus) 3.0 to Gigabit Adapter + USB (Universal Serial Bus) Hub, model TU3-ETGH3, adds a Gigabit Ethernet port & three 5 Gbps Super Speed USB (Universal Serial Bus) 3.0 ports to a Windows or Mac computer. The TU3- ETGH3 is also compatible with USB (Universal Serial Bus) 2.0 & 1.1 ports. An included optional power adapter provides full power to power hungry USB (Universal Serial Bus) devices. Features Gigabit Ethernet Adds a Gigabit Ethernet port Super Speed USB (Universal Serial Bus) 3.0 Adds three USB (Universal Serial Bus) 3.0 ports which support 5 Gbps speeds when connected to a USB (Universal Serial Bus) 3.0 port Flexible Connector Attached flexible 10 cm (4 in.) USB (Universal Serial Bus) 3.0 cable accommodates most installation scenarios Operating Systems Compatible with Windows & Mac operating systems Compatibility Compatible with USB (Universal Serial Bus) 2.0 & 1.1 ports Power Optional adapter ensures operability of power hungry connected USB (Universal Serial Bus) devices