Not been used for a while, so i powered up and did a factory reset, all runs ok. Charged to 100% OK. Connected to internet to sync time and run up explorer as shown. I will run another reset factory before selling

As per systems page :

Windows RT 8.1

NVIDIA TEGRA 3 Quad Core CPU 1.3 GHz

32-bit o/s ARM-based processor

Keyboard is the very thin original

Power supply was replaced and so probably not an Microsoft version

All supplied in original packaging as per pics