USB to RS485 Serial Converter Module – CH340, PLC & Multi-OS
USB to RS485 Serial Converter Module – CH340, PLC & Multi-OS
USB to RS485 Serial Converter Communication Module
Seamlessly bridge your computer to industrial RS485 devices with this compact, plug-and-play USB-to-RS485 Serial Converter Module. Powered by the reliable CH340 chip, this module delivers stable, high-speed communication for PLCs, I/O modules, sensors, and a wide range of industrial equipment. Made in Mainland China.
Key Features
- CH340 Chip Technology: Ensures stable operation and broad compatibility with mainstream operating systems.
- USB-A Interface: Simple plug-and-play setup — no complicated configuration required.
- Multi-OS Support: Fully compatible with Windows, macOS, Linux, and other operating systems.
- Built-in Terminating Resistor Selection (TR): Easily adapts to varying transmission environments for consistently stable signal quality.
- Wide Operating Temperature Range: Functions reliably from -20°C to 85°C (relative humidity 10%–90%), making it suitable for demanding industrial environments.
- Low Power Consumption: Energy-efficient design minimises heat output and operating costs.
- Compact Form Factor: Overall length approx. 18.6 cm, cable length approx. 10 cm — easy to route in tight spaces.
Interface Connections
- A: External RS485 Device Line A
- B: External RS485 Device Line B
- G: External RS485 Device GND
- TR: Termination Resistor Selection
Specifications
| Interface | USB-A |
| Chip | CH340 |
| Operating Temperature | -20°C to 85°C |
| Relative Humidity | 10% – 90% |
| Overall Length | Approx. 18.6 cm |
| Cable Length | Approx. 10 cm |
| OS Compatibility | Windows, macOS, Linux, and others |
| Power Consumption | Low |
| Package Contents | 1 × USB-to-RS485 Serial Converter Module |
| Country of Origin | Mainland China |
What's in the Box
- 1 × USB-to-RS485 Serial Port Converter Module
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Frequently Asked Questions
Q: Is this USB to RS485 converter compatible with Windows 11 and the latest macOS versions?
A: Yes. The module uses the CH340 chip, which has driver support for Windows (including Windows 11), macOS, and Linux. You may need to install the CH340 driver on some systems — it is freely available from the chip manufacturer's website.
Q: Can I use this RS485 serial converter with a PLC or industrial I/O module?
A: Absolutely. This module is designed specifically for connecting a computer to RS485-based industrial devices including PLCs, serial I/O modules, sensors, and similar equipment. The terminating resistor selection (TR) pin allows you to match the module to your specific network topology for reliable data transmission.
Q: What is the maximum operating temperature for this USB to RS485 module?
A: The module operates reliably across a wide range of -20°C to 85°C with a relative humidity of 10%–90%, making it well suited for both office and demanding industrial environments.
Q: Does this converter require an external power supply?
A: No external power supply is needed. The module is powered directly through the USB-A connection from your computer or USB hub, keeping your setup clean and simple.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.