For when your Arduino does not contain a USB interface. This module uses a dedicated USB chip, which ensures that communication is more stable than the cheaper versions. This adapter can be used for both programming and communication with the computer. * Support for both 3.3V and 5V (connect / disconnect on the PCB) * FT232RL Chipset * About current security * Communication led indicator * Pins: DTR,RXD,TX,VCC,CTS,GND https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2025-01-22 https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2025-03-22 https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2025-04-20 https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2025-05-29 https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2026-04-14 https://elecena.pl/product/27738346/opencircuit-ft232rl-usb-to-ttl-serial-adapter 2026-04-25