Network cabinet fan controller

{
  "status": "nominal CAD envelope check; physical fit and assembled cable bends pending",
  "pcb_mm": [
    44.5,
    78.5,
    1.6
  ],
  "outline_corners_R_mm": 6.5,
  "pcb_cabinet_bbox_mm": [
    -22.25,
    -41.25,
    22.25,
    37.25
  ],
  "magnet_boss_clearance_mm": [
    0.3,
    0.3
  ],
  "tab_clearance_mm": 0.9999,
  "cap_inner_radius_mm": 50.5,
  "maximum_board_radius_mm": 44.6526,
  "cap_radial_margin_mm": 5.8474,
  "cautions": [
    "Magnet boss clearance is only0.3mm nominal; PCB outline tolerance and print tolerance require trial fit.",
    "Mated fan plug and wire-bend height not supplied.",
    "MTA-156 bare-header clearance3.565mm nominal does not include the mating plug or wires.",
    "External antenna and cable route not selected.",
    "Four-layer stackup/copper weights must match order."
  ],
  "thermal_geometry_note": "Fields treats the board substrate as its bounding rectangle. Rounded corners and tab relief remove about2.5% of that area; use physical measurement for thermal qualification.",
  "cable_ports": {
    "width_mm": 7.5,
    "height_mm": 12.41,
    "count": 4,
    "locations": "two each side of lower rod ear; source port_angles formula",
    "source_plug_assumptions_mm": [
      10.52,
      6.13,
      15
    ],
    "last_dimension_estimated": true,
    "arctic_actual_plug_verified": false
  },
  "board_extension": {
    "old_square_mm": 44.5,
    "added_length_toward_cable_entries_mm": 34,
    "old_centre_y_mm": 15,
    "new_centre_y_mm": -2,
    "note": "Consumes some of the original cable bending volume; routing and insertion/removal not validated."
  }
}