http://www.ec21.com/ec-market/modems.html http://anylamda.en.ec21.com/2Wave_Optic_Transceiver_with_FSK--3665866_3666551.htmlModem - Case 1 : Tx(29.9MHz), Rx(26.9MHz) - Case 2 : Tx(49.5MHz), RX(46.5MHz) - Only Slave, Maser & Slave * Applicat20090922 http://posystech.en.ec21.com/85Mbps_PLC_ST_PT_Modem--3137489_3137953.html Type PT : As a plug type modem, if plug in outlet, it is served both functions as working power line and transferri20090224 http://echh.en.ec21.com/EDGE_3g_Hsdpa_CDMA_Evdo--3879165_3880815.html W440U is a complete 3.75G enabled wireless USB data modem designed to offer high-speed wireless connectivity for Wind20100108 http://shunxingtrade88.en.ec21.com/EDGE_3g_Hsdpa_CDMA_Evdo--4025912_4025946.html U flash disk, ultrathin u disk, small and wxquisite, but powerful memory function 1. 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