SABRENT 4-Port Usb Powered High Performance USB 2.0 Hub USB-AHUB
SABRENT 4-Port High Speed USB 2.0 Hub* Top-Loading USB Port For Quick And Easy Access* Allows Addition Of Up To 4 Additional USB Devices* Well Spaced Ports To Avoid Crowding* Compatible With All Operating Systems Incl. Windows XP/Vista/7 And Mac OS XThis  SABRENT USB Hub provides Plug-and-Play simplicity for all of your USB  peripherals such as USB Flash Memory Drives, USB Card Readers, iPod  Docks, Printers, Cameras, Scanners and many other everyday USB  peripherals (NO PERIPHERALS INCLUDED WITH THIS HUB).Convenient Port Layout- The top-loading port provides vertical access which is great for your more portable devices such as USB flash drives.- This hub spaces out the 4 ports so that everything fits nicely and easily unlike inline hubs where ports can be crowded.This  Hub will provide up to 450mA to each USB port eliminating the need for a  power supply for most USB peripherals. While most USB devices do not  require additional power, some power hungry devices like external hard  drives that do not have their own on board power will require a external  power supply. (Not included)Compatibility- Backwards compatible with USB 1.0 devices and is compatible with all computers that have a USB 1.0 or 2.0 port- Compatible with all Operating Systems including Windows XP/Vista/7 and Mac OS XCharging-  This is a standard USB 2.0 hub that requires a host computer to be  attached and powered on in order to charge devices at the USB 2.0 max  500mA.- Due to the constraints of the USB 2.0 standard, this hub,  like all USB 2.0 hubs, will not charge your USB devices that require  more than 500mA such as an iPad.