CompactFlash Cards are a fast, reliable, and affordable storage device based on Flash technology. Designed into next-generation consumer products, these cards are used in a wide range of consumer devices including digital cameras, handheld PCs, digital video camcorders, digital music players, car navigation systems, and electronic books. CF cards are used widely in professional digital SLR cameras as well as in embedded computing applications. CompactFlash offers the highest level of reliability and speed of any Flash card form factor. These products have been tested extensively to ensure high-performance and stability, and support both 3.3V and 5V operation systems.