Unlocked Huawei E1820 HSPA+ 21.6 Mbps 3G/4G GSM USB Modem Mobile Broadband E1820 Modem offers you the Swiftest online speed HSUPA data service of up to 5.76, HSDPA data service of up to 21.6 Mbps Unlocked for any Global GSM Carrier with a data activated SIM Card operating in the frequencies supported for this Modem HSPA+/HSPA/UMTS 2100MHz GSM/GPRS/EDGE 850/900/1800/1900MHz Compatible with Windows 2000 SP4, Windows XP SP2, Windows Vista and Windows 7 Mac OS X 10.4 and 10.5 with latest upgrades Sim card and Micro SD card is not included.