Someone tell me what key to the right of the Left Shift Key that cannot be identified

It sounds like the instructions to set up a third-party keyboard. What happens when you press "Z"? Does it then ask to press the unidentified key to the left of the right shift key?

It doesn't say the key can't be identified, it says the keyboard can't be identified.

It's not about the key not being recognized. It is the keyboard that is not recognized. On that not recognized keyboard, you must press the key immediately to the right of the left shift so that it can identify the keyboard.

HighNoon_USA wrote: Will someone explain to me what the heck does this mean. It doesn't make any sense.

There are 3 different "types" of hardware keyboards -- ANSI (US), ISO (European), and JIS (Japanese). Your machine identifies which Type you have by the code that is returned when you press that key just to the right of the left shift.

For most users the big difference is between ANSI and ISO. ISO has an extra key with symbols between the Z (on a QWERTY layout) and the left shift, and also some arrangement differences over at the right edge. If the machine gets the Type wrong, the user will find the output of some keys does not match the printing on them.

What is the context in which you see this message?

FWIW, in my keyboard there IS a key to the right of the left Shift key:

It is attempting to identify the configuration of the keyboard you are using. There are many different keyboard layouts, and many of them issue a different key code when that "Z" button is pressed. Although the US-inspired "QWERTY" keyboard is most popular nowadays, "QWERTZ", "AZERTY", and Dvorak keyboards still remain popular among people who learned to type on such typewriters or keyboards.

FWIW, the OP's explanation is very similar to setting up some Logitech keyboards with the exception of the phrase "that can't be identified".

FWIW, it could be referring to either the key or the keyboard the way it's written. I suspect you're correct however.