X="4.6" y="2.45"/> - 2 x switching (normalling) stereo jack without switching contact, vertical PCB contacts (4 switching contacts), https://www.neutrik.com/en/product/nl4md-v-s speakON Chassis Connectors, 8 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, vertical PCB mount, additional ground contacts, https://www.neutrik.com/en/product/nc3fbh2-e B Series, 3 pole male chassis connector, metal housing, vertical PCB mount, self tapping screw holes (A-screw), horizontal PCB mount, https://www.neutrik.com/en/product/ncj10fi-h-0 Combo I series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel: mini toggle: 2.5mm above panel, ample thunkicons: probably too short without extra spacers, use mini toggle pushbuttons: ample space above 11.75mm (existing 1p12t rotaries, use 11.25mm holes to PCB edge 4.9399999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector, horizontal/angled (90 deg.