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' need CD driver .Pls make your computer's software or Firewalls allow the USB modem driver to install ,otherwise it can' 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 WiFiEurope version :4G LTE FDD: B1/B3/B7/B8/B20 ;(2100MHz)/(1800MHz)/(2600MHZ)/(900MHZ)/(800MHZ)3G:B1/B8Europe version works in most areas of ,Africa ,middle too .(such as Russia, , Ukraine, , Belarus, , , , , UK, Ireland, Switzerland, , Sweden, , , Denmark, Latvia, Lithuania, , Slovakia, Hungary, Austria, , Belgium, ,Romania, Bulgaria, Serbia, Albania, Greece, Slovenia, ;Korea , Japan, Israel,Turkey, , Singapore, Azerbaijan, ,Australia, Arabia, Qatar,United Arab , Pakistan,; and other African ,Asian countries )You can check frequency bands in link ,https://.frequencycheck./countriesIMEI change function:loginhttp://192.168.0.1/.html imeiSettingand write in a IMEI , then you can change the router's IMEI.This is a function for professional users to do test ,we ' advice ordinary to change device's IMEI to acquire cheaper Internet , and ' technical support to suchmove.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~45CColour:blackMaterial:plasticSize:88 x 28 x 12.3mmPackage Contents:1 x 4G USB WiFi modemOnly 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.