Actually the server deserves full marks. Unfortunately, there are problems that should not be. It is easy to install 2012 R2 because a known issue with the installed NIC there is no Windows. There is even a firmware update that fixes the known problem. Unfortunately, HP allows downloading only with active support contract. Why my contract obviously is no longer valid after half a year after purchasing the product, I do not know. Anyway, I give up after several futile attempts and wonder how HP In addition, its buyers firmware that fixes known issues, can download only against valid support contract. Since the desired operating system can not be installed I can use the device as a send most doorstop ... Too bad! Incidentally, I have the device registered, but even then allows me not download the firmware HP. Half a year after the purchase of the server !! That was probably my last HP server that I bought.