"On paper, DisplayLink claims it supports full 32-bit color at resolutions of up to 2048x1152, but according to the company, USB 2.0 doesn’t provide enough bandwidth to support resolutions above 1024x768. It's currently demoing a version of the tech able to capitalize on USB 3.0, but that's not ready for prime time quite yet. As a result of USB 2.0's limitations, video data must be compressed using a proprietary algorithm" The above may have been addressed regarding resolutions, but the bandwidth issue remains... USB2 may work, but it is limited. Charting fine, but intraday order entry may be an issue on DOM if not using preset orders... Latency adds up. I primarily swing / position trade and can trade off almost any platform. All traders have different requirements, it is important to clarify the definition of "works and trading"...
I highly doubt that in case of such like yours it will be possible to use anything like two external monitors and not using laptop one, VGA and HDMI was done here to connect laptop display plus ANY ONE of that devices and that's it probably.