These cards I seen them and is usually combined with Zenith 286 machines and maybe for early zenith 386.

Cheers,

So I picked up one of these cards off eBay and it is absolutely amazing. All EGA modes work perfectly on a VGA monitor. It’s very fast to. It’s about twice as fast as the E – 3000 EGA card that this is replacing at 717 characters per second for bios video speed. See the pictures one of the benchmark and the other are 640 x 350 16 colors both on a VGA monitor. No need for a pricey rare EGA monitor although I do have a couple of those this one also seems very CGA compatible too which is a bonus. This is in a v20 10mhz dtk xt clone .