Windows 1.04 (IBM OEM)

Windows 1.04 (IBM OEM) is the IBM PS/2 OEM version of Windows 1.04 released on 1987. This version utilizes support for IBM PS/2 model 30, 50, 60, and 80 systems, including drivers for PS/2 mouse, IBM MCGA display (monochrome VGA), VGA display, and IBM 8514/A display (despite simply being a copy of the VGA display driver). It was released on three 3.5" 720 KB floppy disks.