Windows Product Key: Linux Query

You can normally query a Windows OEM Product Key bound to your hardware in a Linux shell quite easily:

sudo strings /sys/firmware/acpi/tables/MSDM | tail -1

The sudo indicates that you normally need root privileges for read access to MSDM and the strings and tail construction will extract the key.

Please check the terms of use for this license before setting up a vanilla installation of Windows on that device, e.g. in a virtual machine.