If you have an RDI PrecisionBook, say Y here if you want to use its
built-in keyboard (as opposed to an external keyboard).

The PrecisionBook has five keys that conflict with those used by most
AT and PS/2 keyboards. These are as follows:

PrecisionBook Standard AT or PS/2

F1 F12
Left Ctrl Left Alt
Caps Lock Left Ctrl
Right Ctrl Caps Lock
Left 102nd key (the key to the right of Left Shift)

If you say N here, and use the PrecisionBook keyboard, then each key
in the left-hand column will be interpreted as the corresponding key
in the right-hand column.

If you say Y here, and use an external keyboard, then each key in the
right-hand column will be interpreted as the key shown in the
left-hand column.