<P> The PS / 2 port is a 6 - pin mini-DIN connector used for connecting keyboards and mice to a PC compatible computer system . Its name comes from the IBM Personal System / 2 series of personal computers , with which it was introduced in 1987 . The PS / 2 mouse connector generally replaced the older DE-9 RS - 232 `` serial mouse '' connector , while the PS / 2 keyboard connector replaced the larger 5 - pin / 180 ° DIN connector used in the IBM PC / AT design . The PS / 2 designs on keyboard and mouse interfaces are electrically similar and employ the same communication protocol . However , unlike the otherwise similar Apple Desktop Bus connector used by Apple , a given system 's keyboard and mouse port may not be interchangeable since the two devices use a different set of commands . </P>
<P> The PS / 2 port is a 6 - pin mini-DIN connector used for connecting keyboards and mice to a PC compatible computer system . Its name comes from the IBM Personal System / 2 series of personal computers , with which it was introduced in 1987 . The PS / 2 mouse connector generally replaced the older DE-9 RS - 232 `` serial mouse '' connector , while the PS / 2 keyboard connector replaced the larger 5 - pin / 180 ° DIN connector used in the IBM PC / AT design . The PS / 2 designs on keyboard and mouse interfaces are electrically similar and employ the same communication protocol . However , unlike the otherwise similar Apple Desktop Bus connector used by Apple , a given system 's keyboard and mouse port may not be interchangeable since the two devices use a different set of commands . </P>
where do you plug in a keyboard or mouse on a pc
where do you plug in a keyboard or mouse on a pc
The PS / 2 port
The PS / 2 port