23:38 <anholt> ndec: 2 of the 6 rb5s I picked up aren't giving me anything on the micro-usb debug serial when I plug them in, and don't put up fastboot when I do the vol-, power plug, power switch, vol- release dance. are there any tricks I might be missing, or are they just doa?

23:40 <anholt> (also, no leds turn on, but that's consistent with the working ones too. they do put up the qualcomm serial on the usbc plug)

23:59 <anholt> oh, hmm. both are p/n ending in "813", the working ones are p/n ending in "814"