This 5pin to USB-A cable can unlock a couple different workflows:

SmallHD Overlays with CTRL.5 
Connect your CTRL.5 to any SmallHD 4K Production Monitor (Cine 13/18/24, OLED 22/27, Vision 17/24, Quantum 32) with USB-A. You can then enable RT overlays (Focus, Iris, Range Finder data, etc). This cable does not work with CTRL.1 or CTRL.3.

Node Cell Modem for Link AX Router 
Connect your Node II or Node 5G to your Link AX Wifi Router to add cell service to your local network.