2X(Serial Port Module UART USB to 4 Way TTL FT4232 Chip DC 5V Converter4099
36,62 €
The COM port with the smallest value corresponds to the first TTL interface, and with the largest value corresponds to the fourth TTL interface (the value of the COM port is not fixed). 2X(Use a USB cable to connect the computer to the MICRO-USB interface on the board. ).
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