A connector provided for coupling a computer peripheral device with a RJ11 or RJ45 data communication socket of a computer. The connector includes a first connecting part and a second connecting part. The first connecting part has a shape mating with said data communication socket. The second connecting part includes a magnetic element such that the connector is attachable onto said computer peripheral device. The peripheral may be a mouse provided with a magnetic plate to cooperate with the whereby the mouse, when not in use, may be removably retained to the computer.