the A1041 that I sold forward to Phil was indeed concluded that the postal office handled it rough and broke it. I guess that the usual foam needs to be doubled if you trust your miners to be delivered by the national postal offices..
I would also like to use this post to mention that I'm in talks with Canaan for a possible A1246 review. So keep yourself updated about the latest gen. AvalonMiner soon.
Raspberry Pi 4 model B does not work with it. Raspberry Pi 3 model B+ does not work with it.
These work ok: AvalonMiner Controller (this is a steel case with Raspberry Pi 3 model B inside) Raspberry Pi 3 model B Raspberry Pi 2 model B Raspberry Pi 1 model B+
The lead times with Bitmain, Canaan and MicroBT gear are getting quite long now again. I think mostly because of the small production capacity for chips and the huge demand.