Dynex DX-B4PORT USB 2.0 4-Port Hub Add up to 4 peripheral devices to your system with this USB hub that allows you to connect up to 4 devices to expand your computer's capabilities. What's Included: Dynex 4-Port USB 2.0 Hub, 5' USB cable, Power supply, Owner's manual. Designed for use with USB 2.0 devices or wide-ranging compatibility. Expands 1 USB port into 4 and allows connection of multiple USB devices. Data transfer speeds up to 480 Mbps Provides quick and easy transfer of your photos, music and files. Plug-and-play design for easy connection. System requirements: PC: Windows SE, 2000, ME, XP, Vista or 7; Mac: OS X or higher.