CompactFlash lacks the mechanical write protection switch that some other devices have, as seen in a comparison of memory cards. CompactFlash does not have any built in DRM or cryptographic features like on some USB flash drives and other formats such as Secure Digital. Such features are rarely used on other cards, however, and are therefore mostly superfluous.
This is the difference. Hope i helped! :wink:
This is the difference. Hope i helped! :wink: