Review on ZSCMALLS Portable Lightweight Cellphone Raspberry 15" Monitor with Built-In Speakers, Ultrathin Design, Plug and Play, HDMI Connectivity, Ultralight, and Full HD Resolution (1920x1080 @60Hz) - ZSC-T15A2 by Michael Seawell

I used this as an extra screen. Pros: - looks representative (small bezels) - cheap - good screen - power supply and HDMI on one side, so you can use the screen in portrait mode. (a small minus, although there are floors on the other side). Cons: - It has a really quite humming sound. (not always and not everyone hears it. you only hear it when it's very quiet, if you have a headset on your head [even without sound] you don't hear it) - there is no switch, so i order an adapter with one Switch - terrible speakers. (I doubt there is a portable monitor with good ones.)