Do I need a wrist rest with a mechanical keyboard?

It depends on your keyboard height and typing posture. Mechanical keyboards are generally taller than laptop keyboards, which can cause wrist extension if your wrists rest on the desk. A wrist rest keeps your wrists neutral. However, the ideal ergonomic approach is to float your wrists and not rest them at all. If you find yourself resting your wrists while typing, an affordable foam or gel wrist rest is a worthwhile addition.