This USB converter device provides a strong connection between USB ports and devices using RS232 or RS485 communication. It has flexible communication switching, letting you toggle between RS232 and RS485 with a simple switch. It includes power supply and signal indicators, making it easy to monitor its status while it's working. It supports both 3.3V and 5V levels, which makes it compatible with a wide range of devices. It has a built-in self-recovery fuse, ESD and IO protection diodes, and a TVS (Transient Voltage Suppressor) to suppress surge and transient spike voltages. With a baud rate of up to 921,600bps, its data transfer is super quick! Features * Uses the original FT232RNL chip, it provides high-speed communication that is stable, reliable and compatible * TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, anti-electrostatic * Resettable fuse and ESD to prevent overcurrent, overvoltage, backflow and static electricity, enhancing shock resistance and ensuring stable and secure communication * RS232/485 communication switching circuit, allows users to flexibly switch communication types by toggling the switch * RS485 output terminal with a 120R resistor, which can be enabled by a toggle switch for flexible switching * 3 LED indicators for easy monitoring of power and signal transmission status * ABS environmental-friendly case, compact in size, portable and easy to use, cost-effective What's on Board Specifications Chip Original FT232RNL chip Host port USB Device port RS232 / RS485 (switchable) USB Connector USB-A Protection Self-recovery fuse, ESD protection RS232 Connector 4PIN cable with a female crimp connector Protection TVS tube, surge-suppress and ESD protection Transmission mode Point-to-point Baud rate 300bps ~ 921600bps RS485 Connector 4PIN cable with a female crimp connector Protection 200W lightning-proof, surge-suppress and ESD protection Transmission mode Point-to-multipoint Baud rate 300bps ~ 921600bps LED indicators PWR Power indicator, lights up when there is a USB connection and voltage is detected TXD TX indicator, lights up when the USB port sends data RXD RX indicator, lights up when the device port sends data back Cable Black, PVC sheath, 2m cable length Resources * Product Wiki Pinout 5V 5V output for external devices GND Ground A+/TX RS485 differential signal positive A+ / RS232 TXD B-/RX RS485 differential signal negative B- / RS232 RXD Package Contents * 1x USB TO RS232/485 https://elecena.pl/product/27699541/usb-to-rs232-485-serial-cable 2025-01-17 https://elecena.pl/product/27699541/usb-to-rs232-485-serial-cable 2025-08-06 https://elecena.pl/product/27699541/usb-to-rs232-485-serial-cable 2025-11-28 https://elecena.pl/product/27699541/usb-to-rs232-485-serial-cable 2025-11-29