HP 475 Dual-mode Wireless Keyboard Be ready to handle anything with the HP 475 Dual-Mode Wireless Keyboard. The jet black design blends perfectly into any office or home office setting. 2 AAA batteries are included so there's nothing in the way of a superb typing experience. Dual-mode pairing lets you easily switch between two devices such as a desktop and notebook PC. The perfect companion at home and on the go.