The Revoltec USB hub provides 4 USB slots, where you can connect other USB devices easily play. The small device is solid and really leaves no room for criticism left. By 4 green glowing LEDs a UFO effect is actually produced (as mentioned in the previous review), which is very nice to look at. For the small price you get a high quality, because of the small "USB helper" easily connected to the power grid, providing a power supply of the connected devices in the switched computer.
In conclusion, I speak from a full purchase recommendation. Who gets along with 4 additional USB Ports, is well advised with this device.