Can anyone let me know if there are any accessories that use this port or any adapters available so that I connect heusinkveld pedals/handbrake/shifter to it as am running out of usb ports?
There are some pedals available to purchase but no Heusinkveld ones.
Best scenario is to work your own cables, I have shifter and handbrake connected. Take a read:
I would recommend a USB hub if you’re running out of ports. I have a Tripp-Lite hard-mounted on the bottom of my P1-X pedal tray, and it’s perfect.
Apex makes a model that looks like a commonly available USB hub inside an enclosure that mounts to aluminum profile: https://www.apexsimracing.com/products/usb-4-port-hub-mount