Troubleshooting a serial COM port connection

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[kailashhospitalgreaternoid]

this is real video you can follow and check your computer serial port this is 100% working i think very less people know this trick to test serial port without any equipment.

[pico]

bro, you jump scared me when you showed your hand

[thekosmokramer]

legit this works, just found my cable was bad, looks brand new

[liesandy]

What if the pc in question had no serial port, I'm having trouble connecting a weighing bridge using serial.
Tried serial to usb adapter= not working
Tried pcie to serial = not working

[Sir_Winston_Smith_Oceania]

I know when I work on ADTRAN gear I dress appropriately, in a clown costume with claw gloves.

[ansonkiek]

Just wanted to ask, my barcode scanner can detect by Hercules serial, but I can’t detect on my software serial input. Is this has to do with port 2, 3 RC, TX reverse problem ? The programming software only have serial input selection and setting such as baud rate same as scanner but still can’t trigger

[pico]

bro, you jump scared me when you showed your hand