Excited (like many here) by the idea of an ultra-portable laptop-style setup, I just invested in a few USB peripherals for my SL-C1000. I wanted to share my experience with these new toys. Sorry in advance for the long post.... I hope this is of interest to someone!
The hardware
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I ordered a Fellowes Stowaway USB keyboard from Chase & Company via eBay. Quick service and good communication (once I got over the hurdle of creating and "validating" my Paypal account). $24.95 + shipping to France = $37.90.
I went over to Surcouf, a big computer store, and bought a Sitecom USB Micro Hub (USB 1.1, 4 ports, 7.99 Euros) and an IOGEAR USB Optical Mini Mouse (14.90 Euros).
I had already installed the wonderful mouse driver found on the forum.
The result
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A pretty nice setup! The mouse and keyboard both work through this unpowered hub.
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Issues I encountered
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Something weird I've noticed: I plug the mouse and keyboard into a hub, then there's a brief delay while they are recognized, then if I type in an app, the keyboard produces random characters that don't correspond to the keys I'm pressing, and the Zaurus suspends after a few moments. Then I wake it up again and the keyboard and mouse work fine.
Key mappings of course correspond to the Zaurus keyboard and not the Stowaway. I'll have to figure out how to use the KeyHelper app... Is there any way to set up something like different profiles that would work with different keyboards? Also, the pipe character / backslash key on the Fellowes keyboard doesn't work... and somewhat annoyingly, the Shift + Space = pipe, the way Trisoft set up their keymappings -- so I keep typing pipes instead of spaces.
My battery power indicator went down as soon as I plugged in the two devices. I could tell it wouldn't last long at this rate -- almost as bad as wifi! And given that the battery indicator is pretty inaccurate, it makes me worried that my Zaurus will suddenly power down. Is it ok to run the Z on AC power for hours on end??
The IOGEAR mouse is really quite usable. But I find it pretty strange that the LED never turns off, which I assume sucks more power (on other optical mice I've seen, the LED turns off). Or maybe the LED only uses a tiny amount of power? This mouse shines red light out the top and back as well as the bottom, so I'm hoping there isn't more than one LED inside!
A couple of the ports on the Sitecom hub were a little tight...
Conclusion
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The Fellowes keyboard is the best portable kb solution I've seen so far. I'm amazed at how cheap it is compared to the price I paid a few years ago for a Stowaway KB for my Handspring Visor! The Fellowes cable is a bit annoying as it's long and gets in the way, but nothing serious. The mouse is fairly well constructed, and quite usable, but I wish it didn't light up so much.
All in all, I'm very happy with my little setup.