Zte MF691 4G usb modem 1,Download up to 21.6 Mbps,Upload up to 5.76 Mbps 2,850/1700/1900/2100 mhz 3,Micro SD ... modem, driver hsdpa usb modem, 4g usb sim card modem The ZTE MF691 is a mobile Broadband modem that gives you high transmission rate of 21.6Mbps download speed ... , Windows 7CommentsVery Stylish & Hottest Design.Multi-colour LED indicator for real-time service status.Easy-to-Use with Plug and ...