PNGKNYOCN RS232 DB9 9 Pin Data Serial Cable, Male to Female DB9 Straight Through Extension Cable YOUCHENG for Computers, Printers, Scanners 4.5 Feet

1.? Pin (DCD) data carrier detection, ? pin (RXD) receive data, ? pin (TXD) transmit data, ? pin (DTR) data terminal preparation, ? pin (SG) signal ground, ? pin (DSR) data device preparation OK, ? pin (RaS) request to send, ? pin (CTS) clear to send, ? pin (RI) ringing indication. 2.The DB9 extension cable can extend your existing connection or replace the cable that restricts you. 3.uses high-quality nickel-plated connectors and plugs and a high-quality PVC injection housing?With wear-resistant, durable, smooth transmission and other functions. 4.This cable's fully molded connector with thumbscrews can provide you with a quick and convenient connection every time. Just loosen the screw to disconnect, then connect and tighten firmly to make the connection. 5.It is recommended not to insert or unplug a serial port while it is energized.When inserting or unplugging the serial port, at least one end should be cut off, otherwise the serial port may be easily damaged. 6.Cable length:140 cm/4.5 ft. 7.Suitable for connection and signal transmission of computers and tax control machines, CNC machine tools, PDAs, set-top boxes and other serial devices. 8.Packing quantity; 1 X DB9 serial cable