An electronic device includes an enclosure, a circuit board mounted in the enclosure, a fan received in the enclosure, a connection line electrically connected between the circuit board and the fan, and a collapsible cable management member. The connection line includes a first cable, and a first and a second connectors respectively connected to opposite ends of the first cable. The cable management member includes a number of fastening poles rotatably connected head-to-tail together. One extremity of the fastening pole of the cable management member is rotatably mounted to the first connector. The first cable is mounted lengthwise on the fastening poles to be collapsible with the cable management member. The second connector is electrically connected to the fan.