device manager "little yellow triangle". Halp!

Solution
It's probably working using some sort of default drivers but without the keyboard/mouse usb receiver drivers properly installed it's likely confusing it and just guessing at what it is. 802.11 is a wireless protocol and could be what the keyboard/mouse are connecting via. Bluetooth does something similar but with a different set of protocols. The 802.11 is a 'band' for wireless communication and it could be for wifi like a wireless network card or other wireless peripherals.
Do you have a usb wireless adapter plugged in? Like a wifi thumb drive or dongle? If so it appears you need to reinstall the drivers for it. If it's part of your motherboard (onboard wifi adapter) you may need to go to the motherboard manufacturer's site and download the motherboard drivers for your board.
 


I have a wireless thing from logitech for kb+mouse yes. Should i uninstall/reinstall that?

 
It's probably working using some sort of default drivers but without the keyboard/mouse usb receiver drivers properly installed it's likely confusing it and just guessing at what it is. 802.11 is a wireless protocol and could be what the keyboard/mouse are connecting via. Bluetooth does something similar but with a different set of protocols. The 802.11 is a 'band' for wireless communication and it could be for wifi like a wireless network card or other wireless peripherals.
 
Solution