Features:
4 USB 3.0 ports for easy expansion.
Supports a data transfer rate of up to 5Gbps.
Plug-and-Play， hot swappable and no driver needed.
Backwards compatible with USB 2.0 & 1.1 specifications.
Supports Windows 2000， XP， Vista， 7 and Mac OS X or later version.
Overcurrent Protection.
LEDs allow for easy status monitoring.
Self Powered (also available: optional power port).
USB cable tucks away when not in use.

Specifications:
Transfer Rate: 5Gbps / 480Mbps
LEDs: 1 * Power on， 4 * Status
Power Consumption: 5.0V，
Ports: 4 downstream， 1 upstream
Operating Temperature: 20 to 50 degrees (Celsius)
Storage Temperature: 0 to 70 degrees (Celsius)
USB Specification: USB 1.1 and 2.0， 3.0 compliant
Housing material: Plastic
Humidity: 20-80% RH(Non Condensing)
Cable Length: 4ft. (1.2m.)
Power Connections: DC adapter (Optional)
Color: black
USB hub weight: 54g / 1.9
USB hub size: 9 * 6.2 * 1.5cm / 3.54 * 2.44 * 0.59in
Package size: 21 * 14.6 * 6cm / 8.27 * 5.75 * 2.36in
Package weight: 251g / 8.85oz

System requirements:
For PC Users:
Windows 2000， ME， XP， Vista， 7
Available USB 3.0 port

For MAC Users:
Mac 8.6 or greater. Requires OS X for USB 2.0 support
Available USB 2.0 port

Note: Optional power adapter(100-240V， DC5V 1A or 2A) may be required for use with power hungry devices such as external hard drives.

Package Contents:
1 * USB 3.0 4 Port Hub
1 * Power Adapter（US)
1 * USB 3.0 Cable