Wow, I bought the 286-AT Leading Edge model, the BBS sysop sold me for 300 dollars in 1990 with 40 MB MFM hard drive (Oldest DOS system) including a 300 baud modem. Then upgrade bigger computer a "Tower" after old 286-AT hit by virus, replaced with
386SX motherboard and 80 MB hard drive, I run a BBS system with 2400 baud modem. untill I bought the 800 MB hard drive and put into 386SX ...