will usb 2.0 work work in usb 3.1 slot

[MaRin123]

will Usb 2.0 works in Usb 3.1 Gen 1 or Gen 2 slot

 

[superninja12]

yes, but u won't get 10gb/s

 

[unreal9400]

It will work.
They are backward compatible.
https://en.wikipedia.org/wiki/USB#USB_3.1
The USB 3.1 standard is backward compatible with USB 3.0 and USB 2.0.