CH344Q USB to 4-Channel RS232 Serial Converter Module
CH344Q USB to 4-Channel RS232 Serial Converter Module
CH344Q USB to 4-Channel RS232 Serial Converter Module
Expand your serial communication capabilities with the CH344Q USB to 4-Channel RS232 Communication Module. Built around the reliable CH344Q chip, this compact converter enables simultaneous full-duplex data transmission across four independent RS232 lines — all through a single USB connection. Whether you're an engineer, developer, or electronics enthusiast, this module delivers stable, high-speed serial communication for demanding projects.
Key Features
- CH344Q Chip: Industry-trusted chipset for reliable USB-to-RS232 signal conversion.
- 4-Channel Simultaneous Operation: Supports simultaneous transmission and reception across all four RS232 lines at the same time — no switching required.
- Full-Duplex Transmission: Enables two-way, real-time data exchange between USB host and RS232 devices without signal interference.
- Wide Baud Rate Range: Supports communication speeds from 1200 bps up to 6 Mbps, accommodating both legacy and high-speed serial devices.
- Built-in 0.5A Fuse: Integrated overcurrent protection safeguards both the module and connected devices from power faults.
- Signal Indicator LEDs: Dedicated TX/RX indicator lights provide at-a-glance confirmation of active data transmission on each channel.
- Low Power Consumption: Energy-efficient design ensures stable performance without drawing excessive power from the host USB port.
Specifications
- Chip: CH344Q
- Interface: USB to 4 × RS232
- Transmission Mode: Full Duplex
- Baud Rate: 1200 bps – 6 Mbps
- Overcurrent Protection: 0.5A fuse
- Voltage (LVD): Below 50V AC or 75V DC
- High-Concern Chemicals: None
What's in the Box
- 1 × CH344Q USB to 4-Channel RS232 Communication Module
Made in Mainland China.
Note: Due to monitor color variations, the product color may appear slightly different from images. Please allow a measurement tolerance of 1 mm–1 cm.
For general guidelines on electrical safety and low-voltage equipment, refer to the OSHA Electrical Safety Resource.
Frequently Asked Questions
Q: What is the CH344Q USB to RS232 module used for?
A: The CH344Q module is a USB-to-serial converter that allows a single USB host (such as a PC or laptop) to communicate with up to four independent RS232 serial devices simultaneously. It is ideal for industrial automation, embedded systems development, multi-device serial monitoring, and any application requiring multiple RS232 connections from one USB port.
Q: What baud rates does the CH344Q module support?
A: The module supports a wide range of baud rates from 1200 bps to 6 Mbps, making it compatible with both older legacy serial equipment and modern high-speed RS232 devices.
Q: Does this module require additional drivers to work?
A: The CH344Q chip typically requires a driver installation on the host computer. Drivers are generally available from the chip manufacturer's website and are compatible with major operating systems including Windows, Linux, and macOS. Check the CH344Q datasheet or manufacturer's support page for the latest driver downloads.
Q: What protection does the 0.5A fuse provide?
A: The built-in 0.5A fuse provides overcurrent protection, automatically interrupting the circuit if the current draw exceeds safe levels. This protects both the module itself and any connected RS232 devices from potential damage caused by short circuits or power surges.