USB 3.0 keyboards, signal to pins for keys?

[mesa]

I have a couple quick questions on keyboards with a USB 3.0 cable.

When we first turn on our computers, is it the 5V pin that turns on the keyboard? When we press a key such as 'esc' or 'enter', through what pin(s) do these signals get sent to the computer?

Thanks!

 

[scottdave]

I can't imagine why a keyboard would need to utilize the superspeed capabilities of USB 3.x
My guess is it uses the same data pins as the previous USB to be backward compatible.
But then who knows for sure except the manufacturer

 

[berkeman]

Agreed, high-speed is not needed for a USB keyboard (even for a fast typist).

When we first turn on our computers, is it the 5V pin that turns on the keyboard? When we press a key such as 'esc' or 'enter', through what pin(s) do these signals get sent to the computer?

The 5V line in the USB cable is what powers the peripheral like a keyboard. That power is used by ICs in the keyboard to scan the keys and send the appropriate key codes back to the computer for whatever keys are pressed (over the USB cable via the differential pair in the USB cable). Just focus on the basic USB cable and its 4-pin pinout (5V, Ground, and the differential signal pair):

https://en.wikipedia.org/wiki/USB