Gradual migration from Zipabox: primary and secondary controllers, etc

I got as far as point 3 and wrote out the steps as I went. I’ll post them here in case they help anyone:

  1. Plug Z-Stick Gen5 into any USB port
  2. Open Z-Wave PC Controller v5.39
  3. Click the gear button (settings). Click the row showing the COM port, then detect, then OK
  4. Click network management
  5. Click Select learn mode and NWI (Classic may also work if the Zipabox is close)
  6. Go to the Zipabox and add device, Z-Wave. Zipabox says “starting exclusion…”. Don’t press anything on the Z-Stick. It will automatically be excluded.
  7. When Zipabox says “starting inclusion”, go back to Z-Wave PC Controller and go into learning mode again. Now the Zipabox will find the Z-Stick.

At this point I got: “Device inclusion completed. Secure inclusion failed”.

I can see the devices in Z-Wave PC Controller, but when I attach the stick to OpenHab, nothing happens. Do I need to add the Z-Stick manually? I tried rebooting. Nothing appears in the logs, so I suspect the stick isn’t being detected. Practical question: all 4 USB ports are occupied, and the Z-Stick is huge, so I’m using an extension cable to attach it. Will this work? How do other people attach it without blocking another USB port?