As you can see the pin-out is:
|Pin 4||White||NET-H||CAN-H (data high)|
|Pin 5||Blue||NET-L||CAN-L (data low)|
I noticed that the center pin is not carrying ground or even shield, which I naively thought would be the case. In fact the designers of this pin-out were a lot smarter! As this is a circular connector, a dumb user could theoretically try to push two connectors together whilst forcing a wrong orientation. That would force power down the wrong wires.
Let's see what happens if you rotate the connectors:
|Female||Male 90°||Male 180°||Male 270°|