CDMA 2000 EVDO Specifications * Separate UIM card compliant with the CDMA800MHZ standard  * Supporting CDMA20001X and CDMA2000 EVDO Release 0 * Data functions: Packet data, asynchronous data, bi-directional messaging, sms * Working band: 800MHZ (transmitting: 824 MHZ ~849 MHZ; receiving: 869 MHZ~894MHz)  * Data rate: Max. 2.4 Mbps downlink and 153 Kbps uplink in CDMA2000 EVDO network;  Max. 153 Kbps downlink and 153 Kbps uplink in CDMA2000 1X network  * Receiving sensitivity: -106dBm  * Power parameters: Working current * Storage temperature: -30?C ~ +75?C;  * Working temperature: -20?C ~ +50?C  * Hardware interface: USB 2.0 interface  * CardBus PCMCIA Type II Slot * External antenna port an external antenna can be added * Supported OS: Windows98, Windows ME, Windows2000, Windows XP, Windows Vista * Supports NDIS- incorporates Windows NDIS (in addition to DUN) functionality for improved interface  between the PC Card and the Windows operating system.  * Voice: 13K QCELP, 8K EVPC IF YOU CAN FIND THE 3 G EVDO USB MODEL U893 that will be perfect [Telecommunications]  CDMA 1x RTT / EVDO; Frequency : 800MHz and 1900MHz; Chipset : Qualcomm MSM6500; Data Communication & SMS Support; Compatiblewith IS-95A, IS-95B and 1xRTT; USB Modem; R-UIM card support; H/ W Interface Type:USB Type Baudrate:Default 230, 400 bps ... , (23) from [China]