BakkerElkhuizen RollerMouse Red Plus - Manual (Page 9)

We recommend that you use the Red plus palm support ,
however, if for any reason you would like to remove the wrist rest,
lift the front edge of the RollerMouse and rest it in your left hand.
Fit the palm support removal key into the slot at the right end of
the unit and twist the key counter-clockwise.
To install the palm support after removal, snap it into the slot on
the front edge of your RollerMouse Re:d.
Red plus palm support
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