Beagle boards are tiny computers with all the capability of todays desktop machines, without the bulk, expense, or noise.
Beagle Bone Black will boot Linux from the on-board 2GB or 4GB e MMC.
Either Beagle Bone Black or original Beagle Bone may also boot from a micro SD card.
Original Beagle Bone is provided with a pre-configured 4GB micro SD card.
Beagle Bone or Beagle Bone Black will operate as a flash drive providing you with a local copy of the documentation and drivers.
Note that this interface may not be used to re-configure the micro SD card with a new image, but may be used to update the boot parameters using the u file. Within 10 seconds, you should see the other LEDs blinking in their default configurations.