find the assembly notes - C1: enlarge footprint; a box film cap instead of latch, https://www.neutrik.com/en/product/nc4fav-0 A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3maah-1 AA Series, 3 pole female XLR receptacle, grounding: ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbv-0 B Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, color coding possible, https://www.neutrik.com/en/product/nc5fav-sw A Series, 4 pole female XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fah2 A Series, 3 pole male XLR receptacle, grounding: without ground/shell contact, horizontal PCB mount, retention spring, https://www.neutrik.com/en/product/ncj5fi-h Combo I series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, steel retention lug, horizontal PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3fbh1-b B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3faav A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, full threaded nose and offset PCB pins, https://www.neutrik.com/en/product/nmj6hfd4 M Series, 6.35mm (1/4in) stereo jack, switched, with full threaded nose, https://www.neutrik.com/en/product/nrj6hh-au Slim Jacks, 6.35mm (1/4in) switching stereo jack B-gauge type (T/TN/R/RN/S/SN), https://www.neutrik.com/en/product/nj6tb-v M Series, 6.35mm.