Sydien 4 Pcs DB9 RS232 Serial Male to 10 Pin Female Ribbon Cable Connector Adapter,30cm Length

These cables are completely useless as a Serial Port motherboard header. They are wired in a completely non-standard arrangement and not wired in the standard serial port header convention pin assignments.A standard Intel Serial Motherboard Header has the following pin assignments;Pin 1 – Data Carrier Detect (DCD)Pin 2 – Receive Data (RxD)Pin 3 – Transmit Data (TxD)Pin 4 – Data Terminal Ready (DTR)Pin 5 - Signal Ground (GND)Pin 6 – Data Set Ready (DSR)Pin 7 – Request to Send (RTS)Pin 8 – Clear To Send (CTS)Pin 9 – Ring Indicator (RI)These should then correspond to the same pin numbers as conventionally used at the DB9 end of the cable which will become the back panel connector. So, for instance, Pin 5 (GND) should be wired from the center pin of the keyed side of the header connector to pin 5, the far right pin in the top row of 5 pins in the Male DB9 connector.These cables are wired as follows;Pin 1 – Data Carrier Detect (DCD) in the header connector – is wired to pin 5 in the DB9 which should be ground!Pin 2 – Receive Data (RxD) is wired to pin 9 which is assigned to RIPin 3 – Transmit Data (TxD) is wired to pin 4 which is assigned to DTRPin 4 – Data Terminal Ready (DTR) is wired to pin 8 which is assigned to CTSPin 5 - Signal Ground (GND) is wired to pin 3 which is assigned to TxDPin 6 – Data Set Ready (DSR) is wired to pin 7 which is assigned to RTSPin 7 – Request to Send (RTS) is wired to pin 2 which is assigned to RxDPin 8 – Clear To Send (CTS) is wired to pin 6 which is assigned to DSRPin 9 – Ring Indicator (RI) is wired to pin 1 which is assigned to DCDSince I needed to get a job done and could not wait for another cable, I cut the cable and reconfigured the wires to their correct RS-232 pin assignments as seen in the attached picture. Then I was able to establish communication.But, as shipped these cables do NOT do what they advertise for a conventional Intel Serial Header motherboard.