Convert one interface to another cables scheme
cable for interconnection of USB and RS232 serial interfaces
USB to serial RS-232 adapter

USB to serial converter (TTL, not RS232):
4 pin USB A receptacle connector layout
4 pin USB A receptacle connector
at the computer's USB cable
9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the computer's serial cable
According to 14 reports in our database (14 positive and 0 negative) this pinout should be correct.

Is this pinout
Source(s) of this and additional information: USB to Serial Dongle and
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