CF modems were very popular during the reign of CompactFlash, but the transition to Secure Digital slots left many Pocket PC users without compatible modems to connect their handhelds to dial-up Internet Service Providers. Now, Socket's SDIO 56K Modem Card, for the first time, allows Pocket PCs with SDIO-compatible Secure Digital slots to dial into any V.90 or V.92 ISP.
AmbiCom's EzJack Dongle-Free CompactFlash Modem Card allows you to have simple and direct access to corporate network, e-mail and the Internet without worrying about breaking or losing cables! Compatible with Windows Mobile 2003, 2003 SE and Windows Mobile 5 devices.
Model CF56M-EZ
Socket
Rugged 10/100 Ethernet
Like
the Socket CF Ethernet Card above, the Socket
Rugged Ethernet CompactFlash card works in
CompactFlash Type I or II slots and with all
Pocket PCs with CompactFlash slots.
Low
power use (19 mA) saves you the hassle of carrying
AC adapters or changing batteries. It includes
a removable RJ-45 cable for 10Base-T Ethernet.
Pocket
PC 2000, 2002 & Windows Mobile 2003, 2003 SE & 5.0 Ready.
Link: 
