USB Notebook Cooler, Hub & Card Reader - 3 Great Features in One Device! Protects your furniture from extreme heat. Prevents your notebook/laptop from overheating. Reads 33 different memory cards. Connect printers, scanners, DVD drives, digital cameras, MP3 players. Maximum connection speed for any USM device! Uses power from USB port. Compatible with USB 1.1 or 2.0. Compatible with Windows and Mac .