The major complaints have been:

1. Banging the knees against the mechanism (or always having it in the way!)
2. Awkward knobs and levers for height adjustments
3. Allowing users to put the keyboard into a "positive" angle which over time may actually cause Repetitive Stress injuries.

The Freedom Arm, a revolutionary design in keyboard support systems, introduces three major breakthroughs in keyboard functionality that finally resolves these problems and makes the keyboard support virtually invisible to the user:

Total knee clearance:  The number one complaint among keyboard systems users is that they often hit their knees (and tear pantyhose, pants ...) on the steel arm that holds the platform. Our new patent pending design supports the mechanism from above, not below like traditional systems, so the only things below the platform are your knees.

Knob free, intuitive height adjustment:  Height adjustments can be made by simply tilting the front of the keyboard up slightly and putting the keyboard where you want it - that's it. No knobs. No levers. No straining! This means you can retract the platform with a single fluid motion even if you're using it at or near a desk.

Low-risk keyboarding:  Unlike all the older generation products, this system cannot be adjusted in a positive tilt, (which typically causes an extended wrist angle) a risk factor for wrist and hand RSIs. This means users cannot adjust the keyboard system into a potentially harmful position.