Well...there is that little round green thing on the back of my new Asus ROG Strix Z390-E Gaming Motherboard...lol Asus does not support power on by USB keyboard. If you install a PS2 keyboard all that hidden information comes up in the BIOS and gives you the option to power on by keyboard.

PS2 keyboards have not been made for a long time but adapters are readily available.

I assume the real reason the PS2 connection is on a gaming motherboard in 2020 is because pro gamers prefer it. I assume because of the full N-Key Rollover Support. Also PS2 is a true hardware device and as such requires no driver. It will always work, when you boot a PS2 it lodes even before the BIOS does. Newer stuff is not always better.

There seems to be no end to the USB devices I need to plug in and for sure not everyone of them at the same time but...

USB Keyboard
USB Mouse
USB backup drive
USB SSD Drive
USB Interface PreSonus
USB interface Native Instruments
USB Piano/Midi Controller
USB Midi to USB Converter
USB Drum Pad
USB Floppy Drive
USB CD Player
USB Connection from my cell phone
USB Digital camera connection
USB Webcam
USB microphone
USB BAnd In A Box Drive
USB Whatever I forgot...lol

The only thing that outnumbers the USB thing is wall warts...OMG...I must have a box of over one hundred of them...lol

The insanity of that is for every one of those little black power supplies in that box, came an electric widget that I paid good money for that quit working. $700 cell phone comes to mind...not funny

Stay safe guys,

Billy

“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”