After my 16 year old iMac died (main board failure).  I bought this to replace it and was extremely happy with the computer, price and shipping.  Beautiful condition. It came with the operating system that it was born with.  I upgraded immediately, removed my old hard drive and installed it in an external drive box, reused my wireless keyboard and trackpad and was in business.  The keyboard and mouse that came with are fine and are in a drawer for backup use.  Fantastic value !!!