• It has an attractive design that its downstream port will light Blue or Orange or Red or... color lighting after plugging the device into each downstream port
• Support both bus-power and self-power modes and automatic switching between self-powered and bus-powered modes
• The enclosed mini switching power adapter that is suitable for mobile purpose
• Support suspend / resume modes
• 4 downstream ports up to 500 mA per port based on self-power modes
• Over-current protection of each port
• USB2.0 interface and compatible with USB 1.1 and USB 1.0 devices
• Support high-speed, full-speed and low-speed transfer rate
• Chains up to 127 USB devices
• Truly Plug & Play automatic system configuration
• Supports Win 98/ME/2000/XP ; Mac OS 9.0 or above ; Linux OS kernel 2.4.x or later

Connectors	USB A type x 4 (downstream) ; USB B type x 1 (upstream)
Humidity	0%~75% RH, non-condensing
Transfer Rate	1.5, 12 and 480 Mbps
Hub Enclosure	Plastics w/painting
Dimensions	95.5 * W 42 * H 21 mm
Operating temperature	5¢XC ~50¢XC
Stock temperature	-20~75¢XC
Emission	FCC Class B, CE
Standard Packing	One 4-port USB2.0 Hub One USB data cable One 1A Switching power adapter (option)