Received my order today, but I'm not happy with it:
1. USB port at one board has soldering paste all over it and USB plug does not fit it, I need it because I want to use the board alone without CAN bus
2. other boards hash at
33-38 GH/s (mean: 34.25 GH/s) mean ~42 GH/s with parameters "--avalon-options 115200:16:10:d:256 --bitburner-voltage 1230"I tried various parameter settings with latest cgminer from git (
https://github.com/ckolivas/cgminer) as well as the one linked in the instruction manual (
https://github.com/someone42/cgminer.git).
so: one board unusable, others way below "46-52" GH/s 
this is not acceptable

So I guess their "fix" to stop the USBs coming off the boards (as per below) was to lather them in solder like in this pic?
Looks like amateur hour...