Minor keyboard, maybe (10)
I believe the answer is:
peripheral
I believe this is a double definition.
'minor' is the first definition.
(I've seen this before)
'keyboard maybe' is the second definition.
(I know that musical keyboard is a type of keyboard)
(Other definitions for peripheral that I've seen before include "not of major interest" , "computing device?" , "printer, for example" , "Computer item" , "Of minor importance" .)