What is the Function of CF Card in router

Probably to hold the image of the router OS, for example on a Cisco Router the CF card holds an image of the IOS.

CompactFlash (CF) is a mass storage device format used in portable electronic devices. For storage, CompactFlash typically uses flash memory in a standardized enclosure.

The format was first specified and produced by SanDisk in 1994.[3] The physical format is now used for a variety of devices.

CompactFlash became the most successful of the early memory card formats, outliving Miniature Card, SmartMedia, and PC Card Type I in mainstream popularity. The memory card formats that came out after the introduction of CompactFlash, such as SD/MMC, various Memory Stick formats, xD-Picture Card, offered stiff competition. Most of these cards are significantly smaller than CompactFlash while offering comparable capacity and read/write speed. Professional memory cards, such as P2 and SxS, are physically larger, faster, and significantly more expensive.

CompactFlash remains popular, and has even experienced something of a comeback. For example, in 2008 Sony chose CompactFlash as the recording media for use in the HVR-MRC1K tapeless video recorder instead of using smaller MemoryStick cards or expensive SxS cards.[4] In 2010 Canon chose CompactFlash as the recording media for use in the XF300 and XF305 high definition video cameras.[5]



http://www.cisco.com/en/US/ts/fn/620/fn62127.html


http://en.wikipedia.org/wiki/CompactFlash

Hello All,

please let me know CF card is Flash of router or not ?