NONETubularW26127 - 2 x switching (normalling) stereo jack and switching ground contact, horizontal PCB mount, https://www.neutrik.com/en/product/nc5fav B Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3fahr2 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3fah2-0 A Series, 4 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, steel retention lug, horizontal PCB mount, https://www.neutrik.com/en/product/nl4md-v-1 speakON Chassis Connectors, 4 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc3faah1 AA Series, 3 pole female XLR receptacle, grounding: separate ground.