I have forwarded the test request for MyGica D690 to our product development team to look into the feasibility to fully integrate this dongle. Before that, we highly recommend that you choose from other TV dongles, such as MyGica D689, from our compatibility list first for better compatibility.
I'd also like to suggest you register for Synology eNews, so that you can always get the latest software update and product release information from us.
If you have any other question, please don't hesitate to let us know.
Have a great day!