I bought a large batch of these from a school district in VA. Some are Windows 10, some Windows 7 Pro. Take your pick... $125 for the Win7 machines, $140 for the Win10. Well kept, clean, completely reloaded from scratch and the hardware carries a 1 year warranty from me. You might as well be buying a brand-new unit! Following are the specifications.
500 Gb HDD
Radeon 7540D HD graphics
15-pin d-sub (standard PC monitor port)
as well as an HDMI port.
Broadcom Gigabit Ethernet
(so it can handle Erwin Fiber Gigabit internet, if you can get it!)
Full-size Internal speaker.
Every unit comes with all security updates, antivirus, utilities, libreoffice, vlc, musicbee, irfanview, Google Chrome, Adobe Reader, Ccleaner and more... I even tweak the equalizers on the players.