Fully compliant with USB specification version 2.0
Hot Plub & Play USB Device
Half-transparent design with Blue LED for Power Status shows fashionable.
Expand four USB port， supply up to 500MA， current per port.
No external power supply
Driveless， hot plug & play
Internal over current protection circuits
Chains up to 127 USB devices.
Compatible windows95/98/2000/xp or MAC 8.6 above
1 upstream and 4 downsteam USB ports included.

Specifications
Interface:
USB2.0， Compatible with USB1.1
Data Transfer rate:
1.5Mbps/ 12Mbps/ up to 480Mbps
4 Separate Port USB 2.0 Expansion
Bus-Power limit current protection: 500mA

Dimension: 6cm(L)*4.7cm(W)*1.5cm(H)