This list is a work in progress, if you know of other compatible devices please reply to this thread:-
Many devices are sold under multiple brands, the link to the Geekzone database shows all the different names a device may be sold under.
Pocket PC
Acer (All)
Dell Axim x51 (And X50 with Windows Mobile 5.0 Upgrade)
E-TEN M600
HTC Himalaya (O2 XDAII, Orange m1000, iMate Pocket PC Phone Edition)
HTC Magician (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=16)
HTC Universal (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=18)
HTC Wizard (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=17)
Intermec 700 Series
Intermec 730
Intermec CN2B
Intermec CN3
Intermec CN30
Intermec CK60
Symbol PPT-8866
Smartphone
HTC Voyager (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=14)
HTC Typhoon (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=24)
HTC Feeler (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=15)
HTC Amadeus (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=29)
HTC Tornado (http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=28, http://www.geekzone.co.nz/smartdevices.asp?phonemodelid=39)
Motorola MPX220
Windows CE
Intermec CV60
Intermec CK60
Intermec CK30
Intermec CK31