The one and only internal modem ever made for the PowerBook 500 series was 
the Global Village PowerPort Mercury 19.2 Kbps speed V.42 bis modem. It was 
about the most advanced modem of it's day for that speed and with appropriate 
compression and clean phone lines it actually delivers about the same performance 
as many 28.8 modems. Unfortunately the clean phone lines part is hard in some 
places and indeed, some modems at AOL and other ISPs don't even attempt to 
pick up the phone line at the 19.2 speed any more. They just pick up at 14.4 
sometimes.

If you have the original NON-PowerPC cpu daughtercard installed in the unit 
you can use any of the PCMCIA (PC Card) cage option for the left hand side 
batery bay and use a modern PCMCIA card modem to get on the internet. You can also 
use an external modem attached to the serial port. If you  have any form of 
the PowerPC upgrades for the PowerBook 500 series you can use an external 
serial port modem but only the Rev. C version of the PCMCIA card cage will work for 
PCMCIA stuff.

When I catch my breath I'll write more. There are also modem driver issues 
for those original internal PowerPort Mercury modems.

Victor Nazarian

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