Prechen Portable Touchscreen Monitor,15.6 inch USB Touch Screen Monitor 1920x1080 Resolution with Dual HDMI Interface USB Powered Compatible PS3/PS4 XBOX360 Computer Laptop Raspberry pi 1 2 3

I've been unable to find any computer USB port that can reliably power this monitor so you will have to power it by a AC adapter and loose the touch screen capability or purchase a12v 2a power adapter. The other issue I've had is that there is no tech support from the manufacture so I called Amazon's tech support and they are helping me get a power adapter for it. If I had it to do all over again I probably wouldn't buy it.

Despite Amazon sending a replacement, the touchscreen does not work and is not recognized by windows device manager. Amazon has tried to help but doesn't really understand what to do. Prechen is unresponsive. This is unfortunate because this is otherwise a nice monitor, but is useless to me without the touchscreen.