Add up to 4 peripherals quickly and easily with the Sabrent 4-Port USB 3.0 Hub. The thin, lightweight design makes this hub a great travel companion to expand one USB 3.0 port into four. Especially great for notebooks which come with only a few ports in an era when you need to attach many USB devices at once, such as a printer, card reader, cell phone, iPod, thumb drive, mouse, keyboard, or an external hard drive. Fully backwards compatible with the USB 2.0/1.1 products. features: * Number of ports: 1(input)/4(output) * Transfer speed: 5GB (USB3.0/HS), 480Mbps (USB2.0/HS), 12Mbps (USB1.1/FS) * 4 Amp power adapter included to power up high powered devices. * Aluminum metal cover system requirements: * Available USB port on the computer. * Windows: 2000/XP/Vista/7/8 (Both 32-bit & 64-bit versions) * MAC: OS X and Above What"s in the box? * 4-port USB 3.0 hub. * USB 3.0 Cable. * 4 Amp Power adapter.