No network security. No power adapter.
The device shipped with a power cord that had a standard USB connector, passing through a wireless receiver, then going to a mini-USB output. It did not include a power adapter, so you have to use a third-party device to connect it to a power supply. The manual was printed in Chinese on one side, and poorly translated English on the other. Some of the instructions were accompanied by images showing a phone or a PC screen, but because of the size of the manual -- it was shrunk down to about a 4-point font -- the sceeenshots were blurry and difficult to interpret. Plus, the screenshots on the English side were identical to those on the Chinese side, meaning that any text displayed on the devices were in Chinese. The instructions were impossible to follow as printed, so I had to try to work it out on my own. And while I was able to puzzle out the initial set-up screen -- it required connecting a mobile device’s WiFi to the dongle’s internal network address -- doing so immediately triggered a vulnerability alert on my network scanner. Apparently, the device’s connection sends entered passwords as plaintext, which presents an opening for outside access. The device’s set-up screens did not provide any way to change this password. When I had the device active, it would not show up onthe Google Home or Miracast apps, despite the instructions implying that was the next step. (I say "implying" because nothing in the manual is ever clearly explained.) When I finally decided it was not worth fighting with any longer, I discovered on disconnecting the power cord that the wireless receiving section was extremely warm. This means that the device is running more current than that section is rated to handle -- creating a risk of melting the device and/or starting a fire.