document updated 22 years ago, on Nov 10, 2003

Hub is a powered one to support the various devices
GPS likely a Garmin Geko 101
Keyboard likely a numeric keypad with a kernel patch for choreded keyboard use
I²C ⇔ USB converter likely made from a custom I2C⇔serial converter, and a commercial serial⇔USB converter (so that linux drivers are easy and I have ultimate control over the I2C network protocol)
USB audio may end up being the guts of USB speakers, hacked to produce line-level output (since there aren't many speakerless USB DACs available)