Most mobile computers have either a CompactFlash I/O or PC Card (PCMCIA) slot. Socket's Type I CompactFlash-to-PC Card Adapter converts your Type I CompactFlash card into a Type I PC Card, so you can also use it in a Type I, II or III PC Card slot. This eliminates the hassle and cost of buying multiple cards to use with your different types of mobile computers. Plus, if the card you need is available only in the CompactFlash form factor, now you don't have to worry about compatibility issues with a PC Card slot.