I am looking to purchase up to 20 x Pandaminer B3 Motherboards.
These are the model ZRTK-21611 motherboards.
Do you mean the backplane or the card with the CPU / drive?
I remember them all having some PM4 part / model number. Not ZRTK but I really did not look that hard at them.
I can go to the warehouse later and check I know I have at least 1.
-Dave