Feature: 1. Scope of Application: The serial communication module supports for OS X, for Linux, for Android, for Win 7, for 8, for Win 8.1, for Win 10, for Win 11 2. Anti Overcurrent and Overvoltage: Onboard resettable fuse and transient suppression diode, anti overcurrent and overvoltage, anti surge, anti static 3. Black Immersion Gold Process: Using double sided black immersion gold process. On board 1o protection circuit, anti surge, anti static, improve shock resistance, stable and safe communication 4. Serial Port 3.3V and 5V: Onboard TTL serial port 3.3V and 5V level conversion pins, support output 3.3V/5V, the module is powered by USB, the jumper cover must be jumped to 3.3V/5V, the TTL communication level can be switched 5. For CH343G Chip: The serial communication module adopts CH343G chip, which supports higher communication rate than CH340G, up to 6Mbps; supports more serial port lo levels: 5/3.3V2.5V1.8V Specification: Item Type: USB to UART Ttl Adapter Material: PCB Host Interface: USB Device Interface: UART Communication Range: 50bps -6mbps USB Interface: Interface Form: Type A Interface Protection: Resettable Fuse, ESD Electrostatic Protection UART Interface: Interface Form: 6PN Curved Pin Header Interface Interface Protection: 10 Protection Diode Circuit. Package List: 1 x USB to UART Ttl Adapter1 x Cable