Dell Venue Pro 8 - do not know which model I have! It is Windows 10

Have just bought a used tablet as above and it is really good but I cannot find a manual for it as when I do it shows a slightly different tablet to mine.

Mine has the power on switch at top right of tablet next to a headphone jack, Then down right side is first a windows button? then the volume button and then a slot which takea a sim card and an SD card. On the bottoms of the tablet to the right is the power port which takes the new type (oblong) C type lead. Next to that is the speaker oulet? The camera is top centre on the back.

The only identification is a very small label which looks like it says this:

ST63(orJ)Z45F2    IMEI 354078  EX 133010 74046076863958

Can anyone help so I can get the correct manual please?  I am in the UK

Thanks

pempti