http://www.engadget.com/entry/1234000583043286/

LITERAL:
If they’d really wanted to impress us they would’ve already had this ready from the get go, but palmOne’s just announced availability of a driver that’ll let you use their WiFi SD card with the new Tungsten E2. The card already works with the Tungsten T3, the Tungsten T5, and the Zire 72 (in fact, it’s the only WiFi SD card that’s compatible with palmOne handhelds), but so far, despite all their big talk about how this was in the works, there’s still no love for the Treo 650 (which means you’ll have to satisfy yourself with Shadowmite’s hacked drivers for now).