[USB to RJ12/11 Cable] This is a 6P4C cable,It leads to 4 signals: GND, TX, RX, GND.It can be used in RJ12 interface which uses 6 data lines and RJ11 interface which uses 4 data lines.
[Applicable Devices] The USB RJ11/12 adapter is a replacement for APC part number 940-0144A.Applicable Models: AP77XX, 78XX, 79XX, 86XX, 88XX, 89XX. Or UPS, ATS,BMS Battery and other devices that support RS232 RJ12/11.
[CP2102 Chip] Adopts Silicon Labs' CP2102 chip, which supports a variety of data formats and baud rates, high integration, low power consumption, and easy to use.
[Easy to use] Automatically installs drivers and supports Windows 7, 8, 10, 11, Linux OS and Mac OS. (If not installed automatically, please install the driver manually)
[Buyer Support]Jhoinrch backs this usb a to RJ11/12 with lifetime technical support, a one-year product replacement and warranty, and a 100% customer satisfaction guarantee.