Sony Ericsson PC300 Mobile Broadband PC Card (Unlocked) HSDPA/UMTS/EDGE Networks EDGE/GPRS 850/900/1800/ 1900 MHz HSDPA/UMTS 850/1900/2100 MHz SIM Card: supports 1.8- and 3-Volt SIM cards PC and Mac compatible Weight 42 g / 1.5 oz