3 pole male XLR receptacle, grounding: ground contact connected to shell ground, but not to front panel and Pin 1, horizontal PCB mount Most cost-effective round plastic body XLR PCB mount panel connector. Front panel cutout and PCB layout 100% compatible to A series. "Tulip" type contact design with high contact pressure for highest durability. Flammability rating UL94HB. UL recognized component.