Position your keyboard 1 to 2 inches above your thighs. For most people, this requires a keyboard tray. Adjust the keyboard height so that your shoulders are relaxed, your elbows are in a slightly open position (100° to 110°), and your wrists and hands are straight. If you do not have a fully adjustable keyboard tray, you may need to adjust your workstation height, the height of your chair, or use a seat cushion to get in a comfortable position. Remember to use a footrest if your feet cannot touch the floor.
The tilt of your keyboard is dependent upon your sitting position. Use the keyboard tray mechanism, or keyboard feet, to adjust the tilt. If you sit in a forward or upright position, try tilting your keyboard away from you at a negative angle. If you are reclined, a slight positive tilt will help maintain a straight wrist position.
Ideally, your keyboard and mouse should be shoulder-distance apart and as level as possible. Place the pointer as close as possible to the keyboard. Placing it on a slightly inclined surface, or using it on a mouse-bridge placed over the 10-keypad, can help to bring it closer. The pointer should be placed as close as possible to the keyboard.