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RS232 DB9 9-PIN TO TRS MINI 2.5MM STEREO AUDIO JACK AJ PLUG CABLE FOR EUTECH 700 SERIES BENCH METERS - AliExpress
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9M351M-RS232-CABLE | StarTech.com Male 9 Pin D-sub to Male 3.5mm Stereo Jack Serial Cable, 1m PVC | RS
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10pcs Phone Jack Diameter 3.5 mm 9 pin audio socket TRS Socket Receptacle Female earphone Right Angle Through Holes PCB
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