Plug-and-play Simple plug-and-play wired USB connections. Familiar keyboard layout Familiar layout for easy typing. Quiet-typing Low-profile keys for comfortable quiet typing. Thin profile design Thin profile design looks great on your desk. Smooth optical tracking High definition optical tracking for smooth control. Comfortable ergonomic design Comfortable ergonomic mouse design feels great. Ambidextrous mouse design Ambidextrous shape feels good in right or left hand. Keystrokes for durability Keys last millions of keystrokes for durability.