An SXM2 connector reference resolves A/B7 and A/A39 to GND because two community carriers ground them. The OCP Big Basin schematic (sheet 16) and the OpenPOWER adapter spec treat them as PRSNT2_A/B, a presence-detect loop with a 4.7k pull-up to 1.8 V. The reporter filed it as an issue rather than a PR "because it renames symbol pins, and that affects the workbook, KiCad library and schematics that you regenerate." PR #2 marks the pins DISPUTED in the meantime. The frame check (168 of 168 grounds matching) was done with AI help, and physical A/B identity is still unverified.