4 ports usb hubs

1:USB2.0 Version, compatible with USB1.1

2 :4 ports, and power up to 500mA each port

3:No need adapter, and no need driver program

4 :Truly plug & play and hot swapping capability

5:Full data transfer rate up to 480Mbps

6: Support System: Windows 95/98/2000/2003/ME/XP/Vista Mac OS 8.1 or above (Windows 95/98 systems need to install the driver

7: For mouse, U disk, computer lamp, MP3, card readers, etc.

8: No driver, plug and play