Device Side: 4 x DE9M. Board Side: 40-pin (2x20) connector (2.0 mm). Cable type: serial port cable.
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4 x 15 Pin D-Sub Solder Male Plug Serial Port Connector Job Lot UK SELLER #VID52
5 x 15 Pin D-Sub Socket Solder Serial Port Connector Job Lot UK SELLER #VID51