The Cactus Technologies CompactFlash Memory Card (CF)
– 303 Pro Series is a high capacity solid-state flash memory
product that complies with the Personal Computer Memory Card
International Association (PCMCIA) ATA (PC Card ATA) standard. In
addition to the normal features found on the 303 Series CF, the
Pro Series offers several security, purge, and write protect features.
There is also a version with a physical write protect switch.