DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan. USB to RS485:The SH-U10 is a USB to RS485 adapter. With this RS485 adapter you can quickly establish a connection to other RS485 nodes. SILICON LABS CP2102 Chip:Built-in CP2012 serial chip. You don't have to worry about the driver. It is perfectly compatible with Windows 11,10,8,7,Liunx,Mac OS Etc. Indicators: Built-in power and transceiver indicators. Understand the working status of the device at a glance. 2 YEARS WARRANTY: DSD TECH provides 2 year warranty and lifetime technical support for this usb to RS485 adatper. If you have any questions, please feel free to contact us. We will reply within 1 working day.