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Every model in the PS/2 line contained a 3.5-inch microfloppy drive, a Sony-developed technology that, until then, had been featured most prominently in Apple Macintosh computers.
The low-end PS/2 Model 30 shipped with a drive that could read and write 720KB double-density disks. Other models introduced something completely new: a 1440KB high-density floppy drive that would become the PC floppy drive standard for the next 20 years.
IBM's use of the 3.5-inch floppy drive was new in the PC-compatible world. Up to that point, IBM itself had favored traditional 5.25-inch disk drives. This drastic format shift initially came as a great annoyance to PC users with large libraries of software on 5.25-inch disks.
Although IBM did offer an external 5.25-inch drive option for the PS/2 with batter such as dell Latitude D830 battery , dell MM165 battery , dell YD626 battery , dell 312-0393 battery , dell Latitude D800 battery , dell Inspiron 8500 battery , dell 8N544 battery , dell Inspiron 8600 battery , Dell Precision M60 battery , dell Inspiron 6400 battery line, cloners quickly followed suit with their own 3.5-inch drives, and many commercial software applications began shipping with both 5.25-inch and 3.5-inch floppies in the box.
In many ways, the PS/2 line is most notable, historically, for its introduction of the Video Graphics Array standard.
Among its many modes, VGA could display 640-by-480-pixel resolution with 16 colors on screen, and a resolution of 320 by 200 pixels with 256 colors, which was a significant improvement for PC-compatible systems at the time. It was also fully backward-compatible with the earlier Enhanced Graphics Adapter and Color Graphics Adapter standards from IBM.
In addition, the PS/2 line introduced what we now colloquially call a "VGA connector"--a 20-pin D-type socket that also became an industry standard.
The low-end Model 30 shipped with an integrated MCGA graphics adapter that could display a resolution of 320 by 200 pixels with 256 colors as well, but could display only 640 by 480 pixels in monochrome and was not backward-compatible with EGA. MCGA met its end after IBM included it in only a few low-end versions of the PS/2; cloners never favored it.