If it's been there more than a few months you're probably golden. If you wanna be extra safe, move it to a closet for a couple months before taking it home, just in case.
Edit: actually, as someone who used to do deal with the old computers. If you wanna be super safe, find out what happens to the old computers. Is there a leasing program that will require them to hunt them down at the end of the fiscal year, do they auction them off, or do they just end up in a warehouse collecting dust until they get yeeted into dumpster /recycling truck? If there's no lease program, and it's been there since before October, you're probably good to go.