What is Reddit's opinion of VGA2USB - VGA Video Frame Grabber Capture Device via USB2?

From 3.5 billion Reddit comments

The obvious awnser is to take a USB stick and ask for the powerpoint file at the end of the presentation.

If that's not possible though, then there are hardware screen recording solutions. It does depend on the setup at the venue, but generally what you'll need is a suitable video splitter and some kind of capture device plugged into another computer.

Be careful when buying capture devices for this purpose though - Check what resolutions and framerates they support. Ones designed for general videography will likely be no good unless the PC is set to output at a broadcast-standard resolution.

If that's not possible either, then a second camera locked off on the presentation will do the trick.

That's too bad. Good to know, though.

Have you seen this?

It looks like what you need (no sound, though), but it's hilariously expensive.

Thanks for the link, I'll have to look into it in greater detail when I get out of work. I found something like this, but I don't know much about it either.

Not in the way OP is describing, but there are both USB capture cards and USB monitor output adapters.