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Small green circuit board with USB-C port, pin headers, jumper and three indicator LEDs

LORDWORLD

LORDWORLD USB-C to TTL UART Converter CH340G 3.3V 5V

SKU CH-3XZS-NM3KA

A USB-C to TTL UART converter with a CH340G chip, selectable 3.3V or 5V logic via jumper, and PWR, TXD and RXD status LEDs for STC microcontroller programming

  • Selectable 3.3 V or 5 V logic levels via jumper
  • Three built-in LEDs show power, TX and RX activity instantly
  • CH340G chip is STC-recommended for reliable microcontroller downloads
  • Wide driver support across 32-bit and 64-bit Windows from 98 to Win 8
  • USB 2.0 Type-C connector replaces legacy PL-2303 adapters

USB-C to TTL UART converter

This LORDWORLD module connects a USB-C host to 3.3 V or 5 V TTL serial devices using the CH340G chip. A jumper selects the logic level, and three onboard LEDs show power, TX and RX activity. It targets hobbyists and engineers who need a stable serial link for STC microcontroller programming, firmware upgrades or hardware debugging.

Replaces PL-2303 based adapters

The CH340G is the STC officially specified download chip, so driver conflicts that plague PL-2303 designs are avoided. The jump is worth it when you work across mixed Windows versions from 98 through Win8 32-bit and 64-bit and need consistent enumeration without reinstalling different driver packages for each machine.

Handles STC flashing and serial maintenance

The adapter comfortably drives single-chip upgrades, medium 9 board programming, hard-disk maintenance and router firmware loads at standard TTL voltages. It runs out when the target requires true RS-232 voltage levels, isolation or logic levels outside the 3.3 V and 5 V jumper range.

Highlights

  • Selectable 3.3 V or 5 V logic levels via jumper
  • Three built-in LEDs show power, TX and RX activity instantly
  • CH340G chip is STC-recommended for reliable microcontroller downloads
  • Wide driver support across 32-bit and 64-bit Windows from 98 to Win 8
  • USB 2.0 Type-C connector replaces legacy PL-2303 adapters

Specifications

BrandLORDWORLD

Questions about this item

What jumper setting selects 3.3 V or 5 V TTL level on this converter?

A jumper on the board switches the TTL output between 3.3 V and 5 V levels.

Which driver file is needed for Windows 7 64-bit installation?

Download the driver from cable.cc/download/U2-079.rar and run the installer before plugging the module in.

How can I tell if the RXD line is active without a scope?

The on-board RXD LED flashes when data is received on the serial line.

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