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Industrial USB to 4 independent RS-232 ports, supporting parallel communication
Uses original FTDI FT4232HL chipset for high stability and wide compatibility
Full electrical isolation between channels and host computer, protecting against noise and overvoltage
Multi-OS support: Windows, Linux, macOS, Android (via OTG)
High-speed data transmission up to 921.6 kbps per RS-232 channel
Rugged aluminum enclosure with excellent heat dissipation for industrial environments
Individual LED status indicators for each port for easy monitoring
Plug & Play operation, no external power supply required, USB-powered
Free shipping radius TOÀN QUỐC
Contact support for detailed quote: Hotline: 0386365636
Buy at Vina Connect Showroom See directions
Industrial Isolated USB To 4-Ch RS232 Converter, USB To Serial Adapter, Original FT4232HL Chip, Mac / Linux / Android / Windows Multi-OS Compatible, Wall-Mount Support
Industrial Isolated USB Converter
USB To 4-ch RS232
FT4232HL | Stable transmission | Multiple devices applicable | Multi-OS compatible

Features At A Glance
Version Options

USB TO 4CH RS232
to 4-ch RS232 male port

USB TO 4CH RS232 (F)
to 4-ch RS232 female port
Specifications
| PRODUCT TYPE | Industrial USB to RS232 isolated converter | |
|---|---|---|
| Host port | USB | |
| Device port | RS232 | |
| Baud rate | 300bps ~ 921600bps | |
| USB | Operating voltage | 5V |
| Connector | USB-B | |
| Protection | 200mA self-recovery fuse, isolated output | |
| Transmission distance | about 5m | |
| POWER SUPPLY INTERFACE | Power supply | 5~36V DC screw terminal |
| Protection | Anti-reverse | |
| isolated RS232 | Connector | DB9 male/female |
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | |
| Transmission mode | Point-to-point | |
| Transmission distance | about 15m | |
| Indicators | PWR | Red power indicator, lights up when there is USB connection and voltage is detected |
| TXD1~4 | Green TX indicator, blinking when the RS232 port is sending data | |
| RXD1~4 | Blue RX indicator, blinking when the RS232 port is receiving data | |
| operating environment | Temperature range | -40℃ ~ 85℃ |
| Humidity range | 5%RH~95%RH | |
| Operating system | MacOS, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 | |
Original Industrial Grade Chip
Onboard original FT4232HL chip,
Fast communication, stable & reliable, better compatibility

Safer Isolated Design

Multiple Protection, Safe And Stable
Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection. Onboard self-recovery fuse and protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage proof, improve shock proof performance.

Multi system Support
Supports MacOS, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7, etc.

Aluminum Alloy Enclosure
Aluminum alloy enclosure with sand blasting and anodic oxidation, Solid and durable

Pin definition

Outline dimensions

Resources & Services


USB TO 4CH RS232 (F)
to 4-ch RS232 female port
Specifications
| PRODUCT TYPE | Industrial USB to RS232 isolated converter | |
|---|---|---|
| Host port | USB | |
| Device port | RS232 | |
| Baud rate | 300bps ~ 921600bps | |
| USB | Operating voltage | 5V |
| Connector | USB-B | |
| Protection | 200mA self-recovery fuse, isolated output | |
| Transmission distance | about 5m | |
| POWER SUPPLY INTERFACE | Power supply | 5~36V DC screw terminal |
| Protection | Anti-reverse | |
| isolated RS232 | Connector | DB9 male/female |
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | |
| Transmission mode | Point-to-point | |
| Transmission distance | about 15m | |
| Indicators | PWR | Red power indicator, lights up when there is USB connection and voltage is detected |
| TXD1~4 | Green TX indicator, blinking when the RS232 port is sending data | |
| RXD1~4 | Blue RX indicator, blinking when the RS232 port is receiving data | |
| operating environment | Temperature range | -40℃ ~ 85℃ |
| Humidity range | 5%RH~95%RH | |
| Operating system | MacOS, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 | |
Device preparation:
PC or host device with USB 2.0 or higher
Suitable USB cable and RS-232 serial cables
Hardware connection:
Connect the USB connector of the converter to the PC or host device
Connect each RS-232 port to external devices (CNC machines, PLCs, measurement devices, sensors, etc.)
Driver installation (if required):
Windows: Automatically detected, or install the FTDI driver from the official FTDI website
Linux/macOS: FTDI drivers are integrated into the OS kernel
Android: Use via USB OTG cable with a compatible serial communication application
COM port verification:
Open Device Manager (or equivalent system tool) to identify the four newly created COM ports
Each COM port corresponds to one independent RS-232 channel
Configuration and operation:
Select the correct COM port in the control or monitoring software
Configure baud rate, parity, data bits, and stop bits according to the connected device requirements
Maintenance notes:
Avoid frequent plugging/unplugging during active data transmission
Keep connectors clean and avoid operation in humid or high-static environments
We will contact and send a quote based on the information you provide!