Rating: 
Summary: Universal?
Review: No way! It does not work with the Toshiba e405, that's certain. Cannot align laser with infrared port located at the bottom righthand side of the PDA -- unless, of course, you are willing to hold it with one hand and type with the other. I'm sending it back.
Rating: 
Summary: Great design, compatability issues
Review: The design of this keyboard is great. It's a bit larger than others when folded, so of course it's a trade-off. If you want a great layout, get this board. If you want something tiny, get something else. The only problem I have with this board is compatability. There are at least three hardware revisions of this board. I got a version 1 board, and it is hardware incompatable with some number of handhelds. Be sure what version you're buying BEFORE buying it, and check the compatability list on Targus's site to make sure it works with what you want it to work with.
I've kicked e-mails back and forth with Targus for a bit now, and they refuse to even give me a hint as to why this thing required multiple versions. If anyone knows WHY this keyboard would be incompatable with a handheld beyond any hope of software fixes, please let me know. I'm not quite sure how that would ever be the case. I did find out, though, that NO revision will work with a Dell Axim X30, which is not on their compatability list at all. This is a great board if it'll work with your handheld. Just make sure it will first.
EDIT: please note that the compatability list on the Targus website is wrong on at least a few counts. My rev 1.0 hardware worked fine with store display units of the Tungsten C, T3, Zire 31, and Zire 72. All I know for sure is that it won't work with the Tungsten T. Unfortunately, there aren't display units of Axims, or I'd find out for sure about that one. Just don't assume the list is right, test things first if possible.
Rating:
Summary: IR beam arm is almost imposible to align on a Toshiba e755
Review: The rotating wand arm must be aligned to the infrared port of the PDA. The arm rotates 210 degrees but the sender can only point directly to the pivot point. The adjustable arms are laughingly flimsy. As a result I can only get it to work if I hold the pda in my right hand directly above the ir arm. Then it works great but it's an utterly unworkable solution. Instead of a rotating arm which makes the angle wrong. Why not a sliding arm so that it is always at a right angle? Truly awful unworkable piece of flimsy junk
Rating: 
Summary: Almost perfect.
Review: This keyboard is impressive. Though it is not practical for constant use, it is certainly the answer if you have large amounts of text to enter. (I would not jot down a phone number or address with it, but if I'm copying a recipe, taking notes, or writing e-mail, it's perfect.) Even though I have a great and small laptop, there are times when I want to be typing in thirty seconds and be done-and certainly not re-forming graffiti gaffes or trying to remember punctuation. The software is easy to install, and you get the hang of connecting it to your visor after a few times. It's particularly useful for third party applications that don't have a pc desktop interface; my checkbook program, for example, would otherwise have me do my week's collection of receipts with the stylus. For the keyboard-
PRO: *Full size, comfortable, responsive; has a nice, faint clicking sensation. *Attaches easily. *Truly compact. *Some function keys. *Flawless (in my experience) integration with the rest of the machine-not glitchy and doesn't seem to drain the batteries. *Kinda slick to whip it out in a meeting room.
CON: *It can't sit right on your lap, really. You have to put it on something flat. For the software-
PRO: *Easy installation. *Some nice controls for repeat rate, etc. *Compatible with non-keyboard use of the Visor whenever you prefer. If it's in the keyboard, the machine knows it-use of the stylus is not at all compromised.
CON: *You still have to use the stylus. You can't tab between fields, choose items from pop-up menus, scroll through lists, or other things those of us who are truly keyboard-dependent have come to expect.
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