Sierra Wireless Aircard 595 USB Modem for Sprint/Nextel Windows and Mac compatible Transfer wireless data at max speeds of 3.1 Mbs downlink and 1.8 Mbps uplink, on the latest EV-DO Rev A networks GPS enabled (requires Sprint Service) Dual-band, 800 and 1900 MHz support with Receive diversity Support for latest 3G technology, but backward compatible where 3G is unavailable