Features: Update USB driver | Ch1715 | fast speed serial port: This module have a bauds rate of up to 6Mbps, ensuring reliable and fast data transmission. Each serial port is equipped with sending and receiving LED indicator lights Independent serial port: All four serial port can be used independently, providing flexible device management. Double voltages support: Supports 3.3V and 5V, can be switched to meet the needs of different devices. LED indicator light: Each serial port is equipped with sending and receiving LEDs for easy monitoring of data flows. Specifications: Component:Metal Type C 480Mbps USB 4 fast speed serial port, support bauds rate up to 6Mbps Each 1-channel with transmit and receive LED indicators With acrylic protections panel XH2.54 interfaces 3.3V/5V support Package Includes: 1Piece USB to 4CH TTL Serial Module note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.