Features: 1.Chip: Using the new version of CH343G chip, compared with CH340G, it supports higher communication rate, up to 6Mbps; supports more serial port lo levels: 5/3.3V2.5V1.8V. 2.Applicability: Adopt double sided black immersion gold process, durable and beautiful, support for OS, for Linux, for Android, for Windows7/8/8.1/10/11. 3.Multifunctional: On board resettable fuse and transient suppression diode, anti overcurrent and overvoltage, anti surge, anti static, improve shock resistance, stable and safe communication. 4.Serial Port: The onboard TTL serial port 3.3V and 5V level conversion pins can switch the TTL communication level. 5.Output: Support output 3.3V/5V, the module is powered by USB, the jumper hat must be jumped to 3.3V/5V. specification:Item Type: Serial Communication Module Material: PCB Host Interface: USB Device Interface: UART Communication Range: 50bps - 6mbps USB Interface: Interface Form: Micro Interface Protection: Resettable Fuse, ESD Electrostatic Protection UART Interface: Interface Form: 6PN Curved Pin Header Interface Interface Protection: 10 Protection Diode Circuit PackageList: 1 x Serial Communication Module 1 x Cable