For sale here is my Black Dragon Mini Coax cable. I used this in my portable setup for a few years. Specifically, this is the cable based on my order information with Moon Audio:
Black Dragon Mini Coax Digital Cable 75ohm by Moon Audio Cable Length
0.5 ft Source End
4 pole 3.5mm Straight Mini Plug for Fiio X3 & X5 2nd Gen Receiving End
2 pole 3.5mm Straight Mini Plug for Chord Mojo
The cable is 100% functional, but with wear you would expect from it being used for travel. See the photos below.
The price includes CONUS shipping and PayPal payment.