This is the first LC520 I have come across. It is completely stock. It has a 80mb hardrive, 8mb of ram, O.S.7.1. It has a CD drive that uses the removable tray to put the CD in. It was privately owned and not from a school. The condition is very good. And everything works well on it. I was thinking the motherboard would fit into a Colour Classic. But I may just keep it together and do a ram and hardrive upgrade. It is a 25mhz 030 cpu. It has a place for the optional 68882 fpu, so I will have to look for one.