1). A current of 5 A shall be applied collectively to VBUS pins (pins A4, A9, B4, and B9) 2). 1.25 A applied to the VCONN pin (B5 of the plug connector) with the return path through the corresponding GND pins (pins A1, A12, B1, and B12). 3). A minimum current of 0.25 A shall also be applied individually to all the other contacts.