1, The HLP816 CDMA EVDO modem operates on the EV-DO Rev 0 and CDMA2000 1X 800 and 1900 MHz networks in North America and Asia. 2, Supports EV-DO Revision 0 Networks (backwards compatible to Rev 0 and 1xRTT) CDMA 800 MHz and CDMA 1900 MHz. Transmits wireless data at speeds up to 2.4 Mbps on the downlink and up to 153bps on the uplink on EV-DO Rev 0 capable network 3, Supports Windows 2000, XP, Vist,? Dual Band. 800 MHz US Cellular, 1900 MHz US PCS.