Not much on top. SD connector, header, and 2 LEDs. The unit at bottom right is 3V3 voltage regulator. The unpopulated space is for a 5V voltage regulator, if someone wants to power from a 6V wall wart or something similar.
From:
Jim Brain (brain)
(Fri Dec 26 15:44:34 2008)
1.5" by 1.5" by 0.3"
Description
:
Possibly the World's smallest IEC-compatible CBM hard drive!