This Optiplex came with Windows 7 but it now has Windows 10 Pro and needing activation.
I know that seems to be a drawback but it's very minor considering it now has a 1TB ssd for its primary which allows it to boot in 16 seconds.
It also has a secondary 1.5TB sata hard drive for even more storage.
The complete Microsoft Office Suite from XP is installed so you don't have to deal with logging into the 360 stuff.
This XP Suite (as you see in the pics) has Access, Excel, PowerPoint, Publisher, Outlook, Word and FrontPage.
It presently has 8 GB of RAM which I believe is the max for this computer, but 8 GB is plenty good for standard desktop use.
It also has an i5 processor installed and running at 3.1 GHz.
There are 2 USB ports in the front and 4 USB ports in the back.
It also has great wifi but you can use an ethernet cable as well.
If you are needing an almost new keyboard, mouse and (not new) monitor with speakers, I have those listed in the computers section for $30.