Fervit USB-C to TTL Adapter CH340G 3.3V 5V Without housing

USB-C TTL Adapter for STC Microcontrollers

This Fervit USB-C to TTL adapter uses the CH340G chip, officially recommended by STC for reliable serial programming. It targets engineers, hobbyists and technicians who need a stable USB-to-serial link for flashing firmware, debugging or maintaining embedded boards. The board operates without an enclosure, making it compact for bench use or integration into custom fixtures.

Replaces PL-2303-Based Cables with Driver Issues

The CH340G avoids the incompatibility problems that appear with PL-2303 adapters across different drivers and operating systems. A jumper selects 3.3 V or 5 V TTL levels, matching the target device without extra level shifters. Three onboard LEDs show power, TX and RX activity, so you can verify communication without an oscilloscope. The jump is worth it when PL-2303 cables fail to enumerate or drop packets during STC downloads.

Suits STC Development and Legacy Windows Support

Developers working with STC microcontroller families will appreciate the chip’s native compatibility and the supplied driver package covering Windows 98 through Windows 8 in both 32-bit and 64-bit versions. The bare board is less suited for permanent outdoor or industrial installations where a ruggedised, enclosed converter with isolation would be required. Buyers needing RS-232 voltage levels instead of TTL should look at a different interface class.