LDW931-2 is a 4G USB wifi router,with cool leopard eye design , it takes power through USB port , work as wifi router . also can be pluged into computer USB port , work as USB modem . plug&play , doesn't need CD driver .Pls make your computer's software or Firewalls allow the USB modem driver to install ,otherwise it can't work as USB modem . you insert , it will you WiFi Internet automatically.The package does not include , you need buy a NANO from local operators to use this device .High speed LTE Chipset, Support TDD-LTE/FDD-LTE/UMTS/ networks.Multi languages. Plug&Play,No need CD-ROM,No Driver Installation.Up to 10 users access to WiFiSupport Frequency band:4G LTE : B1/3/53G:B1/B8You can check frequency bands in link ,https://.frequencycheck./countriesIMEI change function:loginhttp://192.168.0.1/.html imeiSettingand write in a new IMEI , then you can change the router's IMEI.This is a function for professional users to do test ,we 't advice ordinary to change device's IMEI to acquire cheaper Internet , and 't technical support to such move.Super 4G USB dongle ; Innovative Nano SIM-in-USB technologySupport Win2000/2003/xp/Vista /Win 7/Win 8/Win 10/LinuxPower input :5V1AWorking temperature : -10C~45CType: Wireless 4G wifi Routermodel: LDW931-2Wi-Fi Supported Frequency: 2.4G2.4G Wi-Fi Transmission Rate: 150 MbpsFunction: FirewallMax. LAN Data Rate: 150MbpsStandards And Protocols: Wi-Fi 802.11gcolor:BlackMaterial:plasticsize:88 x 28 x 12.3mmPackage Contents:1 x wifi RouterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.