WIKI: www.waveshare.com/wiki/USB_TO_4CH_Serial_Converter
Weight: 0.209 kg
USB To 1-ch TTL + 1-ch TTL/RS485 + 1-ch Isolated RS485/422 + 1-ch Isolated RS232/485
FT4232HL | Stable transmission | Multiple devices applicable | Multi-OS compatible

| PRODUCT TYPE | Industrial USB to 4-channel multi-functional serial converter | ||
|---|---|---|---|
| USB | Operating voltage | 5V | |
| Connector | USB-B | ||
| Protection | 200mA self-recovery fuse, isolated output | ||
| PORT A (TTL only) |
TTL (UART) | Operating voltage | 3.3V / 5V (configurable via switch) |
| Connector | Screw terminal | ||
| Protection | clamp protection diode, over-voltage/negative-voltage proof, shock proof | ||
| Transmission mode | Point-to-point | ||
| Baud rate | 300bps ~ 12Mbps | ||
| PORT B (TTL/RS485 Choose one) | TTL (UART) | Operating voltage | 3.3V / 5V (configurable via switch) |
| Connector | Screw terminal | ||
| Protection | clamp protection diode, over-voltage/negative-voltage proof, shock proof | ||
| Transmission mode | Point-to-point | ||
| Baud rate | 300bps ~ 12Mbps | ||
| RS485 | Connector | Screw terminal | |
| Direction control | Hardware automatic control | ||
| Protection | TVS diode, surge protection & ESD protection | ||
| Resistor | Onboard reserved 120R matching resistor, NC by default, enabled via jumper | ||
| Transmission mode | Point-to-multipoints (485 mode up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) | ||
| Baud rate | 300bps ~ 921600bps | ||
| PORT C (RS485/422 Choose one) | isolated RS485/422 | Connector | Screw terminal |
| Direction control | Hardware automatic control | ||
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | ||
| Resistor | Onboard reserved 120R matching resistor, NC by default, enabled via jumper | ||
| Transmission mode | Point-to-multipoints (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more; 422 mode: up to 256 nodes, it is recommended to use repeaters for 16 nodes or more) | ||
| Baud rate | 300bps ~ 921600bps | ||
| PORT D (RS232/485 Choose one) | isolated RS232 | Connector | Screw terminal |
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | ||
| Transmission mode | Point-to-point | ||
| Baud rate | 300bps ~ 921600bps | ||
| isolated RS485 | Connector | Screw terminal | |
| Direction control | Hardware automatic control | ||
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | ||
| Resistor | Onboard reserved 120R matching resistor, NC by default, enabled via jumper | ||
| Transmission mode | Point-to-multipoints (485 mode up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) | ||
| Baud rate | 300bps ~ 921600bps | ||
| Indicators | PWR | Red power indicator, light up when there is USB connection and voltage is detected | |
| TXD | Green TX indicator, light up when the USB port sends data | ||
| RXD | Blue RX indicator, light up when the device ports send data back | ||
| Operating system | Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7 | ||
Supports USB to 4-ch multi-functional serial port, convenient for expanding or debugging various industrial serial port devices; Supports USB to 1-ch TTL + 1-ch TTL/RS485 + 1-ch isolated RS485/422 + 1-ch isolated RS232/485

Onboard original FT232RNL chip,
Fast communication, stable & reliable, better compatibility


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, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance.

Supports Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7, etc.

Aluminium alloy enclosure with sand blasting and anodic oxidation,
Solid and durable; Wall-Mount Support, More flexible for industrial installation




Note: The above dimensions are measured manually, there is about 1mm error
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