- 2 x switching (normalling) stereo jack and switching ground contact, horizontal PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3fbh1-b B Series, 3 pole male XLR receptacle, grounding: without ground / shell contact, vertical PCB mount, https://www.neutrik.com/en/product/nc3fbv2 AA Series, 3 pole XLR female receptacle with 6.35mm (1/4in) mono jack without switching contact, vertical PCB mount, https://www.neutrik.com/en/product/nc3fav2 A Series, 5 pole female XLR receptacle, grounding: mating connector shell and front panel, horizontal PCB mount, replaces NL4MD-H, NL4MD-H-1, NL4MD-H-3, https://www.neutrik.com/en/product/nl4mdxx-h-3 speakON Chassis Connectors, 4 pole female XLR receptacle, grounding: mating connector shell and front panel, steel retention lug, lateral right PCB mount, https://www.neutrik.com/en/product/nc3fah1 A Series, 3 pole.