US Patent 8432668 Portable electronic device

A portable electronic device includes a main body, at least one first rotary arm rotatably connected to the main body, and at least one second rotary arm rotatably connected to the main body. At least one connection port is located on at least one of the first rotary arm and the second rotary arm. When the at least one first rotary arm and the at least one second rotary arm are flush with the main body, the at least one connection port is hidden. By rotating the at least one first rotary arm or the at least one second rotary arm until the at least one first rotary arm or the at least one second rotary arm is not flush with the main body, the at least one connection port is exposed.