Why PS/2 port still exist?

[garukno]

this make me wonder PS/2 port was first introduced in 1987, and motherboard manufacture still putting this port over usb

why such old technology still used on many motherboard even high-end motherboard?

a lot of keyboard and mouse use a usb connector anyway

[ARikozuM]

PS/2 doesn't require any drivers and I believe it doesn't need a controller either aside from the KB/M's internal controller.

[Godlygamer23]

It's used for compatibility reasons. Sometimes your USB based keyboard won't work in the BIOS or otherwise, and the PS2 port is a surefire way of ensuring you have control over the system when trying to enter the BIOS or navigate the Windows installer.

[imreloadin]

Same reason parallel ports still appear on some motherboards.

[mad dudy]

well when i install windows 7 in a pc that only have usb3 my ports dont work until i have usb driver install so PS/2 solves that problem.

[Zodiark1593]

Albeit a rare occurrence, there have been times I was grateful to have PS/2.

[AnonymousGuy]

I've swapped motherboards without reinstalling Windows and had zero USB devices working.  With no network card drivers either to remote desktop or teamviewer, you're pretty much fucked without PS/2.  (sometimes I'll get lucky and just need to find the USB ports that don't require drivers).