new to me Filco MT2 TKL, I've made a pig tail mod to more easily swap keyboards at my desk this is the 2nd of these cables I have made as some years ago I made one for my other filco MT2 TKL.

Keyboard: Filco MT2 TKL mx-browns

parts JIST 5Pin Connector / USB Mini Extnsion cable cut to solder onto JIST wires.

Pin out filco 1 +5V 2 Data- 3 Data + 4 GND 5 Shield (can just solder this to Gnd on USB cable)

USB 1 +5V (RED) 2 DATA+ (green) 3 DATA- (white) 4 GND (black)