astral zephyr
I have a Zotac 1660 Ti with 3 DisplayPort ports, and 1 HDMI port.
I only have HDMI displays. 
However basically everything I have found has stated that it could support Dual Mode, so in turn a passive adapter could work, but nothing says that for certain.
The I/O shield/locking bracket only says DP for each port, so that doesn't help too much.
There was something that said to check the GPU documentation, but the only thing that states about the ports.. is extremely generic, having VGA and DVI port examples.
Is there a specific version that always supports DisplayPort Dual Mode?
Will I just have to get a passive adapter and just see if it just works?