The ADP-I2C-USB-Z is a USB to I2C interface connector. It is used for communicating between a digital power management device (like the ADP1043A) and the configuration software that runs on a computer. It also supplies 5V and 0.5A to power up the daughter card/evaluation boards. This same USB to I2C interface connector is used for the ADP1043A, ADP1047, ADP1048 and other digital power management devices.