But for some strange reason VGA outputs were abandoned by graphics card manufacturers a while ago - I don't know why
...But there are some decent D/A converters out there, converting HDMI, DVI or DisplayPort outputs to analogue VGA signals. But sadly I've found none delivering the 5V on pin 9 of the VGA port, needed for the VGA dongle to work
.That's why I thought: well... we've got USB and its 5V output - why not use it (or some other external power supply) for the dongle?
So I did some testing with my Geekom AS 6 mini PC and a barrel jack attached to the power input of the dongle:
... and it worked great! Even the activation tool for the dongle had no problems running under Windows 11. I watched some 3D videos and a BluRay 3D with the Stereoscopic Player and had no problems at all.
That's why I thought: let's get to get it to work in a kind of more professional way
So I designed a small PCB which can be sandwiched onto the PCB of the dongle:
It's nothing special. It uses a standard barrel jack for power input... but with a non-standard polarity setup (since I wanted 5V passthrough when nothing is connected):
So for using USB power you may have to build your own adapter cable.
It uses an IRLML6402PbF p-channel mosfet for a simple protection against wrong polarity and even all the testpoints are still accessible after the installation
:The addon board uses a lot of the vias and some testpoints for attaching it to the PCB of the dongle... making sure it stays where it should.
Everything fits barely inside the casing - but it fits without any problems. The addon PCB should work with any older revision of the VGA dongle... but since I don't have any newer revisions to test, I don't know for sure if it works with them too...
Gerber files are available at OSHpark:
https://oshpark.com/shared_projects/6VUUgriu
I know
: It's kind of a stupid little project... but maybe some people will have some fun with it 
!