A mini display port structure is provided for receiving a connector insert. The mini display port structure includes a circuit board unit and a receptacle unit. The circuit board unit has a base board, wherein an opening is formed on one side of the base board. A portion of the receptacle unit is accommodated in the opening of the circuit board unit and is connected to the base board. Accordingly, the circuit board unit is elevated at a certain position within the height of receptacle unit, and thus the height of the receptacle unit can include the height of the circuit board unit at the same time, thereby shrinking the height of the mini display port structure after the circuit board unit is assembled for making a compact mini display port.