This 7-Port USB 2.0 HUB with Free AC Adapter provides an easy way to add up to multi-USB peripherals， which can surely solve your problems. Just plug the USB hub into your computer and you have a portable and easily accessible way to connect other USB devices. With highly regarded quality， this versatile cable is also the ultimate way to stay connected while maintaining a very clean look. Generally speaking， this kind of hot sale USB hub is ideal USB expansion for portable use on the road or at home!                                    Features             Connect more USB devices to your PC or notebook with this 7-port USB 2.0 <br> It supports up to 480 Mbps data transfer rate and is ideal for alleviating desktop clutter<br> Connect USB devices such as a Webcam， mouse， Printers， Scanners and more<br> Hot-swappable plug and play connection<br> Daisy-chain connection of up to 127 devices<br> Friendly and ergonomic design   <br>                                                            Specifications             Type     Hub    <br> Color     Black    <br> Weight     4.62 oz / 131 g    <br> Dimensions     (3.19 x 1.81 x 0.95) " / (8.1 x 4.6 x 2.4) cm (L x W x H)    <br> Transfer Rate     480Mbps    <br> USB Cable Length     19.68 " / 50cm    <br> Adapter Voltage     5V    <br> Output Current     400mA    <br> Adapter Interface     5.5 mm    <br> Port Quantity     7 USB Ports    <br> USB Standard     2.0    <br> Compatible with     Linux 9/Win7/Windows Vista/Windows XP/ME/2000/98/Mac OS X 10.2 or Above         <br>                                                             Package Includes            1 x USB Hub<br>1 x USB Cable<br>1 x AC Adapter<br>1 x Vertical Stand<br>