This is an add-on 3G CDMA2000 module for the FriendlyARM Mini210 Samsung S5PV210 development system and the Mini6410 and Tiny6410 Samsung S3C6410 development systems.
It is a ZTE AC581 USB 3G modem supporting CDMA2000 1X and CDMA2000 EVDO networks. It connects to the development system via USB. You must supply your own 3G SIM card.