Like traditional SD cards, SDHC cards work in many types of devices, including cell phones, cameras, tablets and computers. The two differ primarily in storage capacity and compatibility: A 2GB card can hold about 30 minutes of HD video recorded at 9 megabits per second or around megapixel photos. A 4GB Gateway 3200 Series AuthenTec Modem can store twice as much, an 8GB card four times as much, and so on. To make the backlight function keys work properly I[…]