A USB hub is a device that expands a single USB port into several so that there are more ports available to connect devices to a host system. This USB hub 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 then 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. USB hubs are often built into equipment such as computers， keyboards， monitors， or printers. What’s more， there is a card reader included; with which you can store your data or transfer data from one place to the other. Is it practical? Come on， chance is in front of you!                                    Features            Plug and play， no external power supply neededThis USB hub is fully compatible with USBFriendly and ergonomic design， this type of PC 3USB port hub can be easily portableBackward compatible with the USB revisionCompatible with many systemsThe LED indicator light will give out red light when connected with computer                                                            Specifications            Type    Hub    <br>Transfer Rate    Up to480Mbps.    <br>Standards    USB 2.0    <br>Ports    3 USB ports    <br>Weight    88 g/3.1 oz    <br>Color    White    <br>Dimension    (7.5 x5 x 2.5) cm / (2.95 x1.97 x 0.98)" (L x W x H)    <br>Cable Length    55 cm / 21.65"    <br>Support OS    Windows 98/SE/ME/2000/XP/Vista/7， Mac OS 10.0X， Linux 2.4X    <br>Suppot Memory    MS/MS PRO DUO， SD/MMC， M2， Micro SD     <br>                                                            Package Includes            1 x USB 2.0 3-Ports High Speed HUB Card Reader