[USB to RS485 Converter CH340 Chip] USB RS485 RS232 industrial grade 2-in-1 converter extends to RS-232/485 interface via USB. Using CH340 series chip, using CH340 driver, USB and 485 signals can be sent and received in half-duplex mode, data can be transferred in both directions. | [Transmission Stability] Built-in TVS protection circuit, electrostatic ESD protection, surge protection, AB signal line short circuit and power short circuit protection, protect your equipment from voltage spikes and surges, reliable and stable performance, ensure consistent data transmission and reception, making it more suitable for industrial applications. | [Compact & Portable] Small in size and light in weight, this USB to RS-485/RS-232 converter can easily fit in your pocket or bag, making it perfect for use on the go. | [Easy to Use] Simply plug in the USB to RS485 adapter and it will be automatically recognized by your operating system, making it easy to set up and use your device. | [Wide Compatibility] Industrial grade USB to RS485 RS232 converter. Suitable for Windows 2000, XP, Vista operating systems, ensuring compatibility with a wide range of devices. Widely used for PLCs, printers, POS systems and industrial control equipment.