I guess the link on my original post is a bit misleading as the picture shows the right connector, but worded it wrong. The cable i need is the C7P (one square side, one circular side so the connector mates only in one direction).
Audioquest for sure only seems to have the C7 (both sides rounded), not the C7P. Same thing with Cullen....C7 only.
@skids Skids, thanks for the info on the Shunyata. It appears that i can request either C7, C7P or an adapter with them.