Hard disk connecting mechanism and hard disk assembly using the same

A hard disk assembly comprising:

• a first and a second hard disks, both hard disks each having a composite receptacle, a hard disk connecting mechanism for holding the first and the second hard disks, wherein the hard disk connecting mechanism comprises a frame for mounting the first and the second hard disks and a composite connector detachably positioned in the frame, the composite connector comprises a longitudinal base, a first composite plug engaged with the composite receptacle of the first hard disk and a second composite plug engaged with the composite receptacle of the second hard disk, the frame defines a sliding slot, and the base forms a sliding protrusion slidably received in the sliding slot to slidably position the composite connector in the frame;
• wherein the first composite plug of the first hard disk comprises an electrical plug, a data plug and a partition portion between the electrical plug and the data plug;
• the first composite receptacle comprises a power receptacle for receiving the electrical plug, a data receptacle for receiving the data plug and a slot between the power receptacle and the data receptacle for receiving the partition portion;
• wherein the hard disk assembly further comprising a plurality of electrical cables, the base defines a plurality of wire holes, an end of the electrical cable passes through the wire hole and is connected with the electrical plug of the first composite plug, and the other end of the electrical cable is exposed out of the base;
• and wherein the hard disk assembly further comprising an electrical connector mounted on the end of the electrical cable exposed out of the base.