1.5 Metre USB Cable is A-Male To Mini 5-Pin Male. It is a fast, bi- directional, i-synchronous, low-cost, and dynamically attachable serial interface that is consistent with the requirements of PC platforms of today and tomorrow. USB is the ""Plug & Play"" interconnection standard used for both PC's and Macs. The 'A' connector must connect to the Computer, or another USB Hub. The 'B' Connector is for the peripheral.