Although moving files between PCs via USB stick is quite simple and easy to do, I wonder whether a direct USB cable connection between PCs would have some merit. I have experience of doing that through lap-link (PC-Linq) between Win98E and WinXP. Its driver/software is of 2003, and might not be suitable for 'now', but there is a 2018 post on the web [https://answers.informer.com/162205/is-pc-linq-really-working-with-windows-10] that claims it works for Win10, provided it is installed and run As Administrator, and that the compatibility mode is set (for WinXP). I have done that and when it failed, I ran the Troubleshooter wich came back with 'Mdi is incompatible'. Knowing that PCs often tell diagnostic lies, I figure the fault could be in the leads, the USB ports as well as in the software. I have not found an update to the 2003 software - despite the post being of this year 2021. I wonder if there is any authoritative statement out there about my ambition. I read that file-transfer can be done through ethernet cable, but having read up on that, have decided its a maresnest of self-invited trouble including disabled internet.