I bought 4 outside cameras, two inside mini and hook them to two Blink sync modules 2 with USB stubs. The whole system was working fine until the last day when both modules got off line without any reason. I have trying to reconnect all kind of way removing one from the server and register again without success so now the system is useless. Not sure if I would recommend it if it does not get solve. Huge disappointment. After contacting tech services i hook them back within a minute. So i'm pretty sure Blink was doing some work on their server but never notified are warned any customers because those paying for the cloud would want a discount and that's too complicate for them to handle. Anyhow and raise my evaluation from one to four star because when it's working it is a fairly good system.