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Black USB-A to 6-pin header cable with three status LEDs, 3-foot length

SMUGDESK

SMUGDESK USB Converter FTDI FT232RNL 3.3V TTL 6Pin LED 3FT

SKU CH-Z179-RG7XK

USB-to-3.3V TTL serial converter with FT232RNL chip, 6-pin header, status LEDs and 3-foot shielded cable for embedded debugging

  • Authentic FTDI FT232RNL chip ensures stable USB-UART conversion up to 3Mbps
  • Fixed 3.3V TTL output with 6-pin header prevents MCU burnout on ESP32 and STM32
  • Power, TX and RX LEDs give instant visual feedback during programming and debugging
  • 3-foot shielded cable resists EMI and rugged moulded connector endures repeated plugging
  • Works with Windows 11, 10, 8, 7, XP, Mac and Linux for router repair and IoT flashing

USB to 3.3V TTL UART Debug Cable

The SMUGDESK USB converter uses an authentic FTDI FT232RNL controller to provide stable USB-to-UART conversion at 3.3V TTL levels. It targets embedded developers, IoT engineers and technicians who need reliable serial communication with 3.3V microcontrollers such as ESP32 or STM32 devices. The six-pin header exposes VCC, GND, TX, RX, RTS and CTS for full hardware flow control.

Replaces Unreliable Clone-Based Adapters

This cable replaces generic converters that use counterfeit chips and suffer from frequent driver errors across Windows 11, 10, 8, 7, XP, Mac OS and Linux. The jump is worth it when debugging router firmware, flashing IoT modules or performing industrial serial diagnostics where a stable baud rate from 300bps to 3Mbps prevents failed flashes and corrupted data logs.

Three-Foot Shielded Cable with Status LEDs

The 3-foot shielded cable reduces electromagnetic interference during bench testing or outdoor equipment maintenance. Integrated power, TX and RX LEDs give immediate visual feedback on communication activity, helping spot wiring mistakes quickly. Headroom covers most 3.3V MCU programming tasks; it runs out when target devices require 5V logic levels or higher voltage domains not supported by the fixed 3.3V output.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $16.99
Pricier than about 60% of the 1,430 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 6-pin 3.3V TTL header fit my ESP32 or STM32 board?

The cable provides VCC, GND, TX, RX, RTS and CTS pins at fixed 3.3V levels, matching the pinout used by ESP32, STM32 and other 3.3V MCUs.

How do I install the driver on Windows 10 or 11, and what step do people miss?

Plug the cable in, let Windows fetch the certified FTDI driver automatically, then verify the COM port appears in Device Manager; the step often missed is confirming the port number before opening the terminal.

What maintenance will the LEDs and cable need over time?

The TX, RX and power LEDs are solid-state and require no replacement; inspect the 3-foot shielded cable and molded USB connector periodically for physical wear.

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