... HSPA+,HSPA+,WCDMA(UMTS) 4G LTE-FDD 2600MHz 3G UMTS 900/1900/2100MHz ZTE AL621 4G LTE FDD DC-HSPA USB Modem, also named 1010 Express 100 Modem ... , supports the mainstream 4G LTE FDD frequency 2600MHz and compatible with the 3G DC-HSPA+/UMTS ... networks, auto switch between 4G/3G/2G, up to 100Mbps and 50Mbsp LTE speeds, 42Mbps and 5.76Mbps ...