Completed: inspect all 26 terminals and electrical pads, research the exact manufacturer drawing, identify pins 17–20, repair their names and descriptions, and read back schematic, layout and symbol. No terminal or pad was deleted. No physical pin number, pad UID, geometry, electrical type or connection was changed. Publishing was not attempted, as instructed.

Pins 17–20 are real LED pins, not duplicates of PoE center taps. LED1 green conducts 19→20 and orange 20→19; LED2 green conducts 17→18 and orange 18→17.

Exact manufacturer customer drawing 2250629, title 1X1 4UTG02LET 10G 4POE TAB DOWN SINGLE 4PPOE 120W, sheet 2 circuit and component-side PCB layout. The manufacturer PDF was successfully downloaded with a browser user-agent and rasterized after its image-only contents defeated text extraction. Its sheet 2 visual inspection confirms the complete signal/VC mapping below. The datasheet-query parser could not independently validate the graphical signal numbers; unsupported tool guesses were discarded (including incorrect VC assignments). This is visual drawing verification, not a claim of machine-validated pin-number citations.

Datasheet identity: ds_aaf4907b04372941f017928fdf961df2753e10a455e87bc2e63ef036de8016f4. Verified LED evidence handle: dsq_818a8f22107c9ddee3e2 / ds1 and ds2. Circuit parser handle dsq_9250657010ace7820549 validates the circuit title only, not its pin map. Local downloaded drawing: /root/work/drawing.pdf on pinmap-review. The stored SnapEDA datasheet URL failed as non-PDF; the exact manufacturer drawing override succeeded. No nearby variant was used.

Pad UID prefixes cross-reference both the initial and final scene-tree reads. All rows have the same physical number before and after. G=green, O=orange, A=anode, K=cathode.

SH1–SH6 are library identifiers for six physical shield tabs, not manufacturer-numbered signal pins. They remain separate terminals. The scene tree also has one unassigned NPTH mounting hole, which is not one of the 26 electrical pads.

Commit a9553ec1: renamed four terminal designators as shown above. The footprint labels followed automatically while retaining their UID references. Commit cab1b9aa: added exact LED polarity and not-a-PoE-terminal descriptions to those four terminals. Both edits requested introduced-problem checks; no introduced problems were reported.

Full read-only schematic after edits: 26 terminals; physical pins 1–20 once each plus unique SH1–SH6; zero nets, zero wires, zero no-connects. Full pad scene tree after edits: all 26 electrical pad UID prefixes unchanged, renamed LED pads matched terminal names, positions/sizes/shapes unchanged. LED centers in mm remain 17=(-6.44,-16.46), 18=(-3.90,-16.46), 19=(3.90,-16.46), 20=(6.44,-16.46). Symbol image after edits displays all four new functional LED names. Therefore there was no evidence of duplicated 17–20 terminal identities to remove.

Info: the existing default custom SVG asset remains untouched: 2250629-1 2250629-1_0_0 Symbol.svg, UID 3feb57f1-e53e-4542-ae84-4e5f932b135b. Custom SVG uses static graphics and six overlaid shield strokes, and all six shield terminals retain their shared Symbol Pin Position (-57,-214). The generated symbol inspection shows six shield entries separately; actual placed custom-symbol interaction was not tested. Do not treat this repair as validation of shared-shield automatic net propagation or of a host-board PoE power circuit. Connect all intended shield tabs explicitly in a consuming design.

Unattempted: replace/redraw custom SVG, alter shield grouping/geometry, update the stored datasheet link, publish, and host-board electrical qualification. These are not necessary to identify the four reported unknown pins and were left unchanged to preserve the part. The root-property lookup using self was unsupported, so no root Symbol Style change was made. No quality ticket was filed because the reported terminal identities were repairable with supported edits.