What does 'negative tilt' mean on a keyboard tray, and does it matter?

Negative tilt means the back of the keyboard sits lower than the front — sloping away from the user. That position lets your wrists stay straight and slightly extended rather than bent upward, which is the neutral posture most ergonomists recommend. Positive tilt (back higher than front) puts your wrists in extension and adds strain during long typing sessions. Most quality keyboard trays support both directions. FindOfficeFurniture.com lists tilt range in every keyboard tray spec — call 888-719-4960.