Palm Rest: Yes Normal Keys: 103 Operating System Supported: Windows XP/ Vista Mac OS X 10.5+ Features: Laser etched Keycaps 10 million strokes Life Cycle Dishwasher Safe for easy cleaning 100% Waterproof Guaranteed Silver Seal Protection (antimicrobial plastic reduces bacteria growth) Embedded Smart Card reader Family Friendly — Durable and Safe Plug n Play installation Ergonomic Comfort Multimedia Ready 13 Programmable Hot Keys