* This USB Host adapter cable turns your Fieldbook F57 into a USB host, allowing you to connect a USB memory stick, a mouse or a keyboard to your Fieldbook F57. * PC-free back up of videos and photos from Fieldbook F57 to an external memory stick in a convenient way. * Connect to a keyboard or a mouse for easier control of your Fieldbook F57. * This cable is used to connect the USB Type-C port of your Fieldbook F57 to the USB Type A plug of your compatible USB device.