Hello,
I have had a SamKnows Whitebox 8 Internet monitoring device for many years.
I have now upgraded to a 10Gbps connection from my router and can no longer have it inline.
The SamKnows people don't take the devices back but instead suggest that I offer it to someone else to take over. (Refer: https://samknows.one/hc/en-gb/articles/360000497278)
More information on the programme here: https://measuringbroadbandnewzealand.com/
So if anyone would like to take it, let me know. I'm in Wellington (Brooklyn) if you want to collect, otherwise I can send it to you.
Cheers
Conrad