Don't remeber the model number, but the 286-based micro-thin PS/1 my parents bought back in '90 had 13 disks for it's 'install/backup set'. The system was about 2in thick, 12in wide, included a Mouse, PS/1 software crap, IBM DOS 4.0, MSWorks for Dos, 1M of RAM, a 1.4M floppy drive and 40M IDE hard drive. the included 12" monitor also included they system's power supply (how the thing was made so dang small). Also included a weird internal 2400baud modem with a non-standard interface. The system got tossed (not sure I can say I'm sad about it either) when my parents move to a condo a couple years ago.