Built for use in enterprise environments, the EliteDesk 800 G3 Mini Desktop Computer from HP is a secure and manageable PC with the performance required by today's workforce and a chassis to fit in modern workspaces. It is powered by a 2.5 GHz Intel Core i5-6500T Quad-Core processor that will allow you to run multiple applications simultaneously

Hard Drive 1 TB

RAM 8GB

The 4 are the same model 1FY83UT#ABA

I have sold more than 15 with no problem. I don't know about computers, but they are in working condition tested they turn on.

Not sure if the have windows, but they do have the sticker

If you know about computers you will have no problem.

There's is a piece of metal exposed on the back in all four (4) computers

Pictures are part of the description

Like a said before I have sold more than 15 with no problems. Thank you and have an amazing day