Rolodex Combo 2.0 USB Hub and Power Outlet Compatible with Windows 98, 98SE, Me, 2000, XP and Mac OS 10.0 or higher One grounded three-prong outlet is adjacent to the two USB 2.0 ports Includes plastic hub frame and rubberized feet for use on your desk Gives you the ability to add a power adapter for more high-performance devices 2 1/8"H x 6 1/4"W x 2 3/8"D