Panel cutout/drilling: 27.5mm. Pinout: 13cm cable with 4-pole connector. Connectors: female USB-A connector - 4-pin connector. Connector type: USB connector. RoHS: yes. Spec info: for panel thickness 0.8...5.2mm, screw mounting. Assembly/installation: screw. Electrical insulation: IP68. Accessories: Closing cap not included