The peripheral bus in IBM's PS/2 PC. See Micro Channel and IBM PS/2. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

As history shows us, PCI ended up replacing MCA in all of IBM’s systems. The IBM PS/2 systems that used MCA didn’t miss out on classic 1990s cards, such as the original Sound Blaster ...

That's not the console, by the way; this is an IBM PS/2 which released back in 1987. Given how MS-DOS 4 was released in 1988, the two of them are a perfect fit to see what it was like to use a PC ...