Built-in firmware, standard serial port, used to upgrade the original serial port peripherals, or add additional serial ports through USB. The serial port application under the on the computer is fully compatible without modification. Support , Linux, Android, for mac0s and other operating systems Hardware full-duplex serial port, built-in transceiver buffer, communication baud rate supports 1200bps~6Mbps. The serial port supports 8 data bits, odd parity, even parity and no parity, and supports 1 or 2 stop bits. YR-6028 is an efficient and stable USB to 8 serial port -485 product, which can be widely used in industrial automation, security monitoring, energy management and other fields. The use of advanced chip technology and exquisite manufacturing technology ensures the high speed and reliability of data transmission. At the same time, the product also has a number of safety protection mechanisms, which can effectively avoid electromagnetic interference and overvoltage problems, providing users with a more secure and convenient use experience. Not only that, the product also has a simple and easy-to-use operation interface and a compact appearance design, which is convenient for users to carry and use at any time. Let this product become an indispensable tool for your work. Indicator light: Red light: Connect USB, 3.3V power indicator light. Emerald green light: After the USB driver configuration is completed, the emerald green light is on. Normal: It can only be used when both indicators are on. Color: black Material: PCB There are differences in printing and silk-screen printing due to different batches, which not affect the use; there are color differences in the actual product due to different light or display. Package Contents: 1 x USB to 8 Channel Way RS485 Serial Port Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.