Centralize and organize your home or office with a single， power-saving thirteen-port USB hub. This hub features an on/off switch to conserve energy and is backward compatible with USB 1.1 interface. With hot swap and plug and play features， no hero should set out on a quest for USB glory without this versatile hub at their side Product DetailsProduct Dimensions: 3.1 x 3.1 x 0.9 inches ; 2.4 ouncesShipping Weight: 4.8 ouncesNOTE:This device may require additional power depending on the power requirements of all plugged-in devices. Hub features a 3.5mm port to accomodate AC power adapters.