This is the cradle for the H19 Windows Mobile terminal.
The CRD-H19-K01 can have an external power supply, rated at 5V 3.6A.
The power supply is only required for charging without putting a strain on the USB-bus, or when an additional battery is charged. The USB communication and H 19 charging will be powered from the USB bus.
TheCRD-H19-K01 has contact pins to the H19 and a USB-B device connector to communicate to a USB-host.
The CRD-H19-K01 has an additional bay to charge an extra battery. This battery will only be charged when the external power supply is used.