i have it on a G4 Powermac 350Mhz AGP-graphics running Tiger.
it works fine as while awake. but if some usb device is attached when it goes to sleep it does not wake up. If nothing is plugged in when it goes to sleep, it wakes up fine.
someone sad that Belkin F5U219 works fine and is rather cheap, but i have not heard how it does deep sleep
oh. and i just read that OWC might work. just read this article...
http://eshop.macsales.com/tech_cente...cfm?answer=790