The Best Usb To Rj12 Adapter of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Usb To Rj12 Adapter of 2023. Check our ranking below.

2,151 Reviews Scanned

Rank No. #1

DSD TECH SH-RJ12C USB to RJ12 6P4C RS232 Serial Cable for APC PDU ATS(5.9FT/1.8M)

DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan.
USB to RJ12/RJ11: RJ12 and RJ11 are the same on the physical interface. The difference is that RJ12 uses 6 data lines, while RJ11 uses 4 data lines.This cable leads to 4 signals: GND, TX, RX, GND.
Manage your APC PDU/ATS:When your APC PDU or ATS needs to be debugged or configured, you can use this USB to RJ12 Serial Cable to communicate with it.
Replacement for APC Part# 940-0144A. Suitable for the following models: AP77XX AP78XX AP79XX AP86XX AP88XX AP89XX.
Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB to RJ12 6P4C RS232 Serial Cable. All questions will be answered within 1 working day.

Rank No. #2

Jhoinrch USB to RJ12/RJ11 6P4C RS232 Serial Cable Adapter for APC PDU,PACE BMS with FT232RNL Chip

[APC PDU BMS Console Cable] This USB-to-RJ12 cable establishes a communication link between a computer and an APC PDU or PACE BMS device, enabling firmware updates, administrator password resets, network configuration, and other functions via Putty software.
[FT232RNL Chip]This cable utilizes the FT232RNL chip, which offers exceptional stability and broad compatibility, making it the optimal choice for enabling communication between computers and APC PDUs or Pace BMS devices.
[USB to RJ12/11 Pins]This is a 6P4C cable. The pinout for the RJ12 port is: NC, GND, Tx, RX, GND, NC. It can be used with RJ12 connectors that utilize 6 data wires, or with RJ11 connectors that utilize 4 data wires. Note: If the pin sequence does not match your device, it will not work.
[Compatible Devices] USB RJ11/12 adapter is a replacement for APC part number 940-0144A. Compatible models: AP77XX, 78XX, 79XX, 86XX, 88XX, 89XX. Suitable for APC PDU and PACE BMS batteries. [Not compatible with cash drawers, Celestron Nexstar, or radar detectors]
[Easy to use] Automatically installs drivers. Supports Windows 7, 8, 10, 11, Linux OS and Mac OS operating systems. If the driver cannot be installed automatically, Please refer to the manual to download by yourself.

Rank No. #3

DSD TECH SH-RJ12A USB to RJ12 6P4C Serial Cable for APC PDU ATS(5.9FT/1.8M)

DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless.We have served more than 100,000 customers in Europe, North America and Japan.
FTDI FT232RL Chipset: Built-in industrial grade FTDI FT232RL chip, high stability, enough to handle a variety of complex situations.
Manage your APC PDU/ATS:When your APC PDU or ATS needs to be debugged or configured, you can use this USB to RJ12 Serial Cable to communicate with it.
Replacement for APC Part# 940-0144A. Suitable for the following APC PDU ATS models: AP77XX AP78XX AP79XX AP86XX AP88XX AP89XX
Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB to RJ12 6P4C Serial Cable.All questions will be answered within 1 working day.

Rank No. #4

DSD TECH SH-RJ12K USB to RJ12 RS232 Serial Cable with FTDI Chip for ESA Plex-COM2 Bridge EXP-4

DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan.
FTDI FT232RL Chip: Built-in industrial-grade FTDI chip, plug and play, automatic driver installation, high stability and compatibility. Supports Windows 7, 8, 10, 11, Linux OS and Mac OS operating systems.
USB to RJ12: It transmits RS232 signals such as RTS, DTS, TXD, RXD, GND through 6P6C RJ12 interface. This is compatible with devices such as the ESA Plex-COM2 Bridge EXP-4.
Compatibility Note: The lead order of RJ12 is 1(NULL), 2(RTS), 3(DTR), 4(TXD), 5(RXD), 6(GND). Please note: Even if your device supports RS232 communication with the RJ12 connector, it may not work properly with this cable because of the incorrect wire sequence.
Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB to RJ12 RS232 Serial Cable. All questions will be answered within 1 working day.

Rank No. #5

DSD TECH SH-RJ12S USB to RJ12 RS485 6P6C Serial Converter Cable with FTDI FT232RNL Chip

DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan
USB to RS485: With this USB to RS485 cable, your computer can establish connection with industrial control devices in RS485 network.The RJ12 interface leads to the A+, B- pins.
RJ12 interface: Unlike other USB to RS485 adapters, it utilizes the RJ12 6P6C interface, which is smaller in size and designed for industrial equipment
FTDI FT232RNL Chip：Based on FTDI FT232RNL chip with high stability and advertised compatibility, compatible with Windows 7, 8, 10, 11, Linux OS and Mac OS operating systems,Ideal for industrial control
Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this USB to RJ12 RS485 6P6C Serial Converter Cable. All questions will be answered within 1 working day.

Last update on 2025-07-10 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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Usb To Rj12 Adapter

The Best Usb To Rj12 Adapter of 2023 – Reviewed and Top Rated

How Do You Buy The Best Usb To Rj12 Adapter?

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