An expansion board for the Apple //e and Apple IIgs created by Applied Engineering. This board contained an 8086 processor, a floppy drive controller, and an AT keyboard connector. Through various software executors and CDEVs (Control Panel applets for the Apple IIgs), the board could boot MS-DOS (PC-DOS at the time i suppose), and run any application. It was a good selling point at the time to tell people they could use Lotus 1-2-3 on their own home computer. I believe it came with 640K of RAM installed.