The data below comes from a file provided by Sharp Electronics Canada.
We have found other fax/modems will work, but there is no way of
knowing in advance which ones they are. The main factor seems to be the
amount of power required by the PCMCIA card. The better cards use less
power and they work when the Zaurus is powered by an adapter or an
external power supply such as MOBILPAK. We use Megahertz CC4144's in
the ZR-5xxx family. ZR-5000's have fax transmission errors above 9600
Baud. ZR-5700 & ZR-5800 are ok faxing at 14.4 KBaud.
Manufacturer Model No. Capacity
Epson WWB513 Series 512KB (NB70-004268) WWB101 Series 1MB (NB70-004269)
This list is based on Sharp's limited testing of these PCMCIA devices. Compatibility may be affected by modifications made by the device vendor and consequently cannot be assured by Sharp. Users are advised to consult the PCMCIA device manufacturer to resolve any compatibility issues.