Quick Release Keyboard Tray Assembly: Motion Attachment Option Placement : Attaches to the Gamber-Johnson Old Clevis Style Motion Attachment (see picture). Will not work with the new clevis style. Features -Heavy ga:uge steel base plate construction for long-term durability -Aluminum keyboard plate for reduced weight -Black powdercoat finish for maximum corrosion resistance -Keyboard plate features hole patterns: PDRC Keyboard, I-Key -Keyboard and a Standard Amps pattern. -Keyboard can easily be removed using the latching lever in the back and allows for one-handed release -Keyboard can be comfortably placed on the operators lap for typing -When done keyboard snaps back onto the steel base plate with an audible click that indicates an engaged latch -Works with the Gamber-Johnson Old Clevis Style Motion -Attachment only and does not fit with the new clevis style Attaches to the bottom of the keyboard tray -Can be used with Tablet Display Mount (Item No. 7160-0494).