We bought this HP-Compaq as a second computer (office computer). It is obviously not a high-end device, but perfectly adequate for our intended use. Very positive I want to mention the included Windows 8.1, which is on a separate partition of the hard drive and from there can be restored at any time.
Surprised, I was after the housing about the size of the motherboard Open. It is extremely small and I do not think it is standartisiertes Desktop Board. The power supply is not the usual plugs but it needed a laptop cable. But this is of course included and therefore represents no problem.