Microsoft Natural Ergonomic Keyboard 4000Given the time you spend with your hands on a keyboard, investing in the newest addition to Microsofts best selling line of ergonomic keyboards can pay dividends in greater comfort. According to some studies, ergonomic keyboard designs, such as the Microsoft Natural line, have been associated with significant reduction of carpal tunnel syndrome symptoms. Rest your wrists against the plush palm rest in a relaxed, natural angle with this keyboards