This product is being used with a Palm Treo 700wx, Verizon version, and a Fujitsu Lifebook T4250 running Windows Vista Business, 32 bit version. My review and experience confirms good compatibility with these devices.This is a good product once you get it out of its packaging. It's certainly a good candidate for Consumer Reports' "Oyster Awards." The clamshell plastic packaging is pretty standard for small electronics, but where it excels is in the stickers. It's got to be one of the worst uses of stickers I have ever seen; the instructions on how to fold and unfold the keyboard are on an adhesive sticker wrapped around the product, including over the keyboard itself. Removing the sticker left behind large clumps of goo and paper, and it took a good 25 minutes using "Goo Gone," a specialized solvent sold in hardware stores, and tedious picking over each key with the solvent and a paper towel, to get the product into useful working order.Once I got past that, though, I was able to get the keyboard up and running without difficulty. Though its included CD assumes you're installing from a computer using ActiveSync, I was able to use Windows Vista's Mobile Device Center to get it to work on the first try. Equally important, the software did not disable my PDA phone's built-in keyboard.Not unexpectedly, the keyboard only works when my phone's Bluetooth is turned on. That's kind of a given, though. It's a fairly straightforward device, without much bells and whistles, and it does what it's supposed to do very well. I just wish iGo would have put the instructions on a card rather than a sticker, or at least on a glue-less plastic strip.As a side note, I found this product on sale here for a little under $40 with shipping, which is substantially better than its usual list price around $100. I'd like to thank CNet's "Cheapskate" blog for pointing it out. It's quite a bargain.