Cateck Aluminum Finish USB Numeric Keypad for iMac, MacBooks PCs and Laptops Sleek Apple-style design ideal For iMacs and MacBooks Adds a number pad to your existing keyboard for quick and comfortable data entry Blue LED indicator reveals the power status; Easy to set up, Plug & Play, Hot swappable Ultra-thin and compact; No Driver required Compatible with: Mac OSX 10.4 and up; Windows XP, Vista, 7, 8, 10