The cable (car charger?) from the cigarette lighter in the car to the device is 130 cm long.
I just updated my Tom Tom device with lifetime map warranty on my PC today, which did not go properly. Now I can no longer use the Tom Tom Go 510 with Europe map that I bought in January 2016, as it no longer contains a map. I am advised to either reload the map (I did not, as the device was delivered with the map installed) or to buy a new map. That is a lifetime update guarantee!
The cable included with the charger can also be used to connect to the PC. It is a standard USB cable - so any other cable (not micro USB) should also work.
Unfortunately, I have no idea. But I suspect that the connections are all the same (except for the old models).
Recommendation: go to the shop with your own TomTom before buying and have it checked.