Standard USB Male to Dual Female PS/2 Keyboard and Mouse Port
Nice to know: What is PS/2?
What is PS/2?
File:PS2 Ports ATX.jpg - Wikimedia Commons
StarTech.com Replacement USB Mouse to PS2 Adapter FM Connect a USB Mouse to a computer through a PS2 port usb to ps2 adapter usb mouse to ps2 adapter - Office Depot
Definition of PS/2 port | PCMag
Why is there a ps/2 Port on a Z790 Mainboard? : r/pcmasterrace