A wireless communication device using a reduced cable set includes a power supply module, a rotation module, and a communication module. The rotation module includes jack connector with first power and data pins. The communication module is rotatably connected to the power supply module by the rotation module. The communication module includes a plug connector with second power and data pins. Each first power pin is connected to one second power pin to connect the power supply module and the communication module. Each first data pin is connected to one second data pin for transmitting data between the power supply module and the communication module.