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A compact ABS-cased USB to RS232/485 serial converter with status LEDs and DIP switches

MCDODO

MCDODO USB to RS232/485 Serial Converter FT232RNL

SKU CH-4685-3WWAN

Converts USB to RS232/485 using an original FT232RNL chip with TVS surge protection, self-recovery fuse, and a 120R termination switch

  • Product typeSingle Board Computers
  • Original FT232RNL chip delivers fast stable communication
  • Onboard TVS and protection diodes guard against surges and spikes
  • Switchable RS232/485 modes with 120R terminal resistor
  • Three status LEDs show power and transceiver activity
  • Compatible with Windows 7/8/8.1/10/11, Mac, Linux and Android

USB to RS232/485 Serial Converter

The MCDODO USB to RS232/485 Serial Converter uses an original FT232RNL chip to provide stable serial communication for developers and engineers. It bridges modern USB ports with legacy RS232 and RS485 equipment across Windows, Mac, Linux and Android platforms. The board suits industrial automation, IoT edge projects and device debugging tasks.

Dual protocol support with configurable termination

The converter handles both RS232 and RS485 protocols selectable via an onboard switch for flexible deployment. An integrated 120R terminal resistor on the RS485 interface can be enabled or disabled by switch to match bus requirements. This single unit replaces separate adapters for mixed-protocol environments.

Protected circuitry in a compact ABS case

Onboard TVS diodes and a self-recovery fuse suppress surge voltages and provide over-current and over-voltage protection for reliable operation. Three status LEDs indicate power and transceiver activity for quick diagnostics. The ABS enclosure makes the module portable and durable for bench or field use.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $37.99
Cheaper than about 59% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Product typeSingle Board Computers

Questions about this item

Will the FT232RNL chip work with my Windows 7 machine alongside newer PCs?

The converter supports Windows 7, 8.1, 10, 11, Mac, Linux and Android, so the same FT232RNL device can move between legacy and current systems without driver changes.

How do I verify the RS232 and RS485 links are active after connecting?

Three onboard LEDs show power, transmit and receive status; the RS485 terminal resistor is enabled by its switch and the mode switch selects RS232 or RS485, giving immediate visual confirmation.

Does the ABS case include the USB cable and terminal plugs, or must I source them?

The board ships inside an ABS protection case with the FT232RNL chip, TVS suppressor, self-recovery fuse, protection diodes, 120R RS485 resistor and mode switches already fitted; a USB cable and wiring for the terminal blocks are not included.

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