... HSPA+,WCDMA(UMTS) 4G LTE-FDD 2600MHz,3G UMTS 900/1900/2100MHz ZTE AL621 Unlocked 100Mbps 4G LTE mobile dongle ... PlayOS:Windows XP SP2, Vista, or Windows 7 ZTE AL621 1010 Express 100 Modem supports the mainstream FDD ... 2600MHz and compatible with the 3G DC-HSPA+/UMTS networks, auto switch between 4G/3G/2G, up to 100Mbps ... LTE speeds, 42Mbps and 5.76Mbps speeds under 3G mode. ZTE AL621 4G LTE-FDD/DC-HSPA ...