Screens have moved on significantly since the advent of smart phones and tablets so you will probably find not being adjustable is not an issue.
The Tyros Screens are positively antique and well past there sell by date, hence they have to be adjustable to be of any use.
Before you dismiss a keyboard because the screen is not adjustable, try it out first, as you will probably be surprised.
Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).