This cable is for replacing the old DB9 female to 2.5mm audio cable as DB9 COM port are faded in notebook PC nowadays. | Standard pinout: Tip-RXD,Ring-TXD,Sleeve-GND. 2.5mm Tip - DB9#2 , 2.5mm Ring - DB9#3, 2.5mm Sleeve- DB9#5 | USB RS232 to Stereo 2.5mm Plug (Shielded) Data Cable | Cable length:1.8m | Fully compatible replacement cable,Tested to perform as the original APC 940 series.etc.

CP2102+ZT232 usb serial null molden DCE adapter cable for upgrading the old version desktop DB9 - DB9 cross wired null modem cable | usb rs232 to db9 female adapter cable,CP2102+ZT232 chip. | This cable is mostly specially used in PC(host) - PC(host) communication, also called null modem cable | This cable also can be used for PC control the TV, smart TV(as nowadays the TV is a computer) | Standard PINOUT: DB9#2-RX(yellw), 3-TX(orang), 5-GND(blk), 7-RTS(green), 8-CTS(brown)

USB to Null Modem (Cross-Wired) RS232 Serial Adapter.ftdi usb serial null moldem DCE adapter cable for upgrading the old version desktop DB9 - DB9 cross wired null modem cable | usb rs232 to db9 female adapter cable,Add a Null Modem RS232 serial port to your laptop or desktop computer through USB | This cable is mostly specially used in PC(host) - PC(host) communication, also called null modem cable | This cable also can be used for PC control the TV, smart TV(as nowadays the TV is a computer) | Length: 6ft Up to 921.6M RS232 transfering speed.

ftdi usb serial null molden DCE adapter cable for upgrading the old version desktop DB9 - DB9 cross wired null modem cable | usb rs232 to db9 female adapter cable | This cable is mostly specially used in PC(host) - PC(host) communication, also called null modem cable | This cable also can be used for PC control the TV, smart TV(as nowadays the TV is a computer) | Length: 6ft Up to 921.6M RS232 transfering speed.