It's been used with a Garmin FMI cable if 'Despatch' and a Truck icon appears where the usual 'Where To?' and magnifying glass icon shows, together with a little 'no FMI connected' symbol in the top RH corner. All you have to do is hard reset it [for older devices like 265W] or clear nonvol to get the usual main screen back with most nuvi-type devices.

PS: Removed 'WINDOWS' prefix to avoid [further] confusion.