Ergonomics experts say tables and chairs should have adjustable trays for keyboards that can be lowered or raised to fit the user. The keyboard should be placed just below elbow height, flat on the desk or tray. The size of the keyboard probably doesn't matter as much as its location in relation to the mouse. "You want to avoid having the arm in a swing-out position" to use the mouse.

An ergonomic keyboard tray is attached underneath the desk, which allows you to adjust the height and position of the keyboard to a comfortable position. It is specifically designed to adjust the height and angle of the keyboard to provide a comfortable posture to the user.

Many ergonomic keyboard trays also included with an ergonomic mouse ttray. An keyboard tray will provide you a better viewing angle of your monitor.

Ergonomic Keyboard Tray tips:

1. While adjusting the ergonomic keyboard tray, the best height for the keyboard is at elbow height or lower.
2. An adjustible keyboard tray should position the keyboard to be at approximately the same angle as your forearm.
3. Area for a wrist rest
4. Area for a mouse

Ergonomic Keyboard Tray Recipe:

1. Ensure that your keyboard tray has adjustment mechanisms that lock into position. Do not over tightened, so that adjustments can easily be made if you sitting position changes.
2. The width and depth of the Ergonomic Keyboard trays should be large enough to accommodate the keyboard and any secondary devices, such as a mouse.
3. The minimum vertical adjustment range (for a sitting position) should be 22 inches to 28 inches from the floor, if you are working in the sitting position using a keyboard tray.