I bought this Thinkcentre M73 Mini as a replacement for my long outdated desktop. Very small form factor, but I'm very impressed with the performance. Very fast with only 8GB RAM, and it's not quiet...it's silent. Everything works as it should with the exception of the Bluetooth, which is okay since I already had a USB Bluetooth adapter. Comes preactivated with an official installation of Windows 10 Pro, not a pirated copy which is good. Overall I'm very satisfied with my purchase. Thank you.