– Portable design with 4 USB 2.0 hi-speed ports – Works seamlessly with all your USB 1.1 and USB 2.0 devices No power adapter needed – Turns a single USB port into 4 USB 2.0 ports – Stable performance, durable and reliable – Transfers your data at up to 480 Mbps(Note: actual rate will depend on the capability of your device.) Apple Mac OS X and Linux / Unix systems require latest operating system updates for best compatibility. Compatible with most Windows 10, 8.1, 8, 7, Vista, XP, Mac OS X, and Linux / Unix systems. – High-grade chipset ensure stable operation, including plug-and-play and hot-swapping functionality. – This USB 2.0 4 ports external hub offer a high speed, allows you to connect to a variety of USB devices such as scanners, printers, digital cameras, camcorders, speakers, mice, keyboards, external drives, MP3 players and more.