Position Count and Hybrid Layout
The BM25-4P/2-V(53): The 6-position count is split 4 + 2 Power — this is a hybrid signal-and-power header. The four signal contacts handle lower-current lines; the two power contacts are likely wider or rated higher for delivering supply voltage to the mezzanine board. When matching a BOM line, confirm that your circuit count aligns with this split — a standard 6-position header would not distinguish between signal and power duty.
