For this plug to work, you need a DVI monitor, not a DVI-D monitor like mine. VGA is an analog output, and DVI-D is digital, so this simple adapter will not work in my case. What tripped me up was that the DVI female connector on my old desktop video card was exactly as pictured on this adapter. I thought I was good to go with my existing monitor.
https://www.amazon.com/StarTech-com-DVI-VGA-Cable-Adapter/dp/B000067SOH

