IMG 1010 - Connecting AC Power
The IMG 1010 supports an AC power option to support domestic and international customers. The AC power module is located at the rear of the docking station. The AC receptacle connects to an internal power supply that supplies DC voltages to the motherboard. (12 VDC for IMG 1010)
...
It is advisable to install a surge protector between your call processing system and the power outlet. If a high voltage surge occurs on the power line, this device can protect your system by sending the overload to ground.