Cnet USB-27

Cnet USB-27 ... to 40 times faster than USB1.1 connections. Using twisted shielded pair USB cables enables data to be transmitted at full speed, while untwisted shielded pair USB cables can transmit data at low speed. This USB 2.0 Hub is capable of operating in self-powered mode and bus-powered mode. When using an external power supply, the Hub will automatically switch to a self-powered mode. The USB Hub can provide up to 500mA to devices with high power requirements per port, such as printers or scanners. They are also able to act as a bus-powered device providing power to peripherals with low power requirements such as a keyboard, mouse, digital camera, etc.