... .MSM6280 chipset Feature: ---7.2mbps USB HSDPA wireless modem ---HSDPA/umts (2100MHz); ---GSM/GPRS/edge (850/900/1800/1900MHz); ---support 7.2mbps HSDPA services, upload speed: 384kbps ... , windows XP, win7, windows vista Operating Systems Standard:HSDPA: 3gpp r5, up to 7.2mbps downlink and 384kbps uplink, category 5/6 Umts ...