The Maltron Single Left and Right Handed Keyboards are modified keyboards specifically designed for one-handed operation. These Plug-n-Play keyboards have a sculptured shape to provide key heights suited to finger lengths to reduce fatigue and increase speed and accuracy. The letter layout has been developed to meet the special needs of single-handed operation and incorporates push-on/off keys for Control, Shift, and Alt functions. The alphabet, numeric, and arrow keys are all included in the depression of the keyboard. There is also a separate numeric keypad on a flat plane. The function keys are arranged in a single row across the top of the keyboard. Maltron keyboards also have the ability to turn off key repeating if it is not required or to alter the repeat rate setting to Slow, Medium or Fast. Available languages include British English, American English, Spanish, and most European languages. COMPATIBILITY: For use on IBM and compatible computers or Apple Macintosh computers with a USB or PS/2 port. DIMENSIONS (LxWxH): 12 x 9 x 4.5 inches. WEIGHT: 2 pounds. COLOR: Available in grey or black. WARRANTY: 1-year warranty.