BakkerElkhuizen RollerMouse Free2 - Manual (Page 5)

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Adjust your keyboard
To achieve the optimal and most ergonomic working
position with your hands and wrists as flat as possible,
you may need to adjust the height of your keyboard. We’ve
developed keyboard risers that can help you achieve the
right height and angle, regardless of your keyboard type.
Use riser position A if you have a keyboard with numeric
keypad. If you have a compact keyboard (without a numeric
keypad), use the alternative riser position B located towards
the center of your RollerMouse Free2 for a better fit.
To raise the front edge of your keyboard 5 mm, mount the
short risers directly onto the back of your RollerMouse Free2.
If you want to raise the front edge of your keyboard even
higher, simply mount the long risers on top of the short
risers. If you’d rather a flat, yet raised keyboard simply
flip open the small leg on the back of each long riser of
your RollerMouse Free2 for a better fit.
You might want to try out a number of combinations to
find the most comfortable position for you.