So far, I've been completely happy with my Cluster Triple. The documentation on 8086.net is top notch, so it was very easy for me to get all three CM+ devices imaged and booting, then go from there setting up Kubernetes, etc.
Thankful for some initial case/tray designs from the community, until there's something I can purchase, I'm happily using a custom Lego case.
This product is just as described -- a handy USB 2.0 connector set with headers for signal interception and interconnection. You'll know if you need one, but if you do, these well-made little boards are a very nice bench addition.
This is a great dongle to raspberry pi zero, great price and works smoothly, solderless, just plug and play! You can use just to power you raspberry pi or can use USB to device mode (what you think about turn your raspberry pi in a network card? usb to serial adatpter? or flash drive?) Thanks mister "8086 Consultancy" about this creation, amazing!