Casio's web site in Japan has a press release describing the ports:
The unit is loaded with diverse I/O standards, including compatibility with a 100Base-TX LAN,
iEEE1394, USB, a CompactFlash (CF) Type II card slot, a PC Type II card slot and a v.90/K56 Flex
high-speed modem....
It's "Pentium 4", not "Pentium IV"--they changed the nomenclature with the new chip. Go to Intel's website and see.
Actually, Fivas have been available in the U.S. for a while. I bought my -102 from Mobile Planet several months ago.
Fivas have 800x600 screens.
John Ascuaga's Nugget in Sparks, Nevada, has a french fry vending machine in their game arcade. Made pretty good fries, too.