ZTE MF833V 4G LTE USB modem dongle (white color, a critical component to M2M connection sold by DroneNet) provides mobile internet connection to your computers. It can support many vertical application scenarios, such as remote medical diagnosis, UAV, drone (video link for setup. https://youtu.be/GckCVcgiVIs) , intelligent manufacturing, smart apartments management and more… Simple and easy self-installation (plug and play). We can supply up to 10k dongles per month and are happy to know/help develop your applications. You are welcome to contact us with your new applications, you may get free dongles as a reward! It runs very well in Windows, Chrome, Linux and Mac OS (Catalina needs manual install) systems, GL.iNet GL-AR750 travel AC Router etc. It is NOT working well in Android system now (we have IoT version in Android for big industrial buyers, please inquire). SIM can be T-Mobile, AT&T or their associated provider's, Google Fi, H2O also works. Sim distributors are welcome to bundle our dongle with your SIM. Please check the table (in pictures) when you buy SIM, also please get the APN (access point name) info of the SIM (handily available from provider), you may need it (rare cases). Read the simple and short manual carefully before use. There are rare cases that the dongle is not working properly (easy troubleshooting), one reason is it may need manually install driver in some very new version of OS; the other reason is the APN of your SIM needs to be added manually to your device . Go to http:\\192.168.0.1, network setting, add APN, (manual install instruction: https://www.dropbox.com/sh/e0kwx31dwtatr3v/AACksTFf7srl-MTtB4ugpC2ga?dl=0) this dongle is unlocked and PTCRB certified, if your device has firewall, you need to configure the firewall. Many customers loved this dongle. Please feel free to contact us via email lierzhu@gmail.com for questions, our technical support team loves new applications and to solve problems. Thank you so much! Yours, DroneNet Team