I bought one of these from Woot a while ago and it works fine. HOWEVER, if you intend to use this with a work computer (ie, one you do not have admin rights to), please be aware that you will be limited to using it exactly as it is, out of the box, without being able to adjust any of the settings (eg, brightness) using the Emeetlink app. Not only does the app require admin permissions to INSTALL (which is typical and can usually be gotten around by asking IT to install the software for you), but it also requires permissions to OPEN. This is kind of bizarre and impossible to do–I can’t very well open an IT ticket every time I want to adjust the brightness on my camera.
So, be warned.