Handspring Visor
Here you can find the technical reference file for the Visor family of PDAs from Handspring. I retrieved this one from the Internet Wayback Machine.
For a writeup on how I converted a Handspring Visor Deluxe to be USB-powered, see here:
http://twisteroid.blogspot.com/2010/11/making-handspring-visor-usb-powered.html
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