This Universal Serial Bus jack is of the Type A configuration (4 contacts inline: contact 1 on left):
-
Contact 1: Vcc: 4.75 to 5.25 VDC, 500mA maximum
- Contact 2: –Data
- Contact 3: +Data
- Contact 4: Ground
Contact 1 is protected by an automatically resettable fuse rated at 1 A.