Unlocked Huawei E3276s-920 LTE 4G CAT 4 Hilink 100 Mbps USB Broadband Modem Unlocked for any GSM carrier in the operating frequencies supported 4G LTE Band 38/40 TDD 2300/2600MHz 3G UMTS DC-HSPA+ 900/2100MHz GSM 850/900/1800/1900MHz LTE Cat4 DL up to 100 Mbps LTE UL up to 50 Mbps External Antenna CR9 plug Backwards compatibility, supports 3G UMTS DC-HSPA+ up to 43 Mbps