Lenovo ThinkServer TS140 i3-4150 16gb ramthere is a complimentary Windows 11 pro 256gb ssd installed.this drive was not created by me and is not licensed but works fine from what i can see.I have used this desktop as my personal machine off and on over the years, but i mostly use a laptop - so quite a bit of time it has just sat idle.full details from Lenovo atLenovo ThinkServer TS140 Product Guide (withdrawn product) > Lenovo Press