pinout (распиновка)

Serial Port Loopback (9 CheckIt)

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Used to verify that a port is working. This one works with CheckIt.

9 pin D-SUB FEMALE connector  to the computer

Name Pin Pin Name CD 1 6 DSR CD 1 9 RI RXD 2 3 TXD DTR 4 6 DSR RTS 7 8 CTS