Ron,
nice suggestion, I think there are similar solutions available.
It is quite annoying when you get to a summit and, for the simplest of reasons, you cannot get some piece of equipment to function.
Yes, I have previously spent hours getting my Surface Go to work correctly with a GPS dongle, only for it all to be undone the next day with the next “essential” windows update. Of course, you don’t know what the update has done /undone until you are at the summit.
My Surface Go does lose time quite quickly, so I now just set the time by my radio controlled watch. it is usually accurate enough.
I think I will add this to my Go, along with the all important instructions, just in case I need it on a summit one day.
cheers…Stuart