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 112. Anti Overcurrent and Overvoltage: Onboard resettable fuse and transient suppression diode, anti overcurrent and overvoltage, anti surge, anti static3. 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 communication4. 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 switched5. 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: 5/3.3V2.5V1.8VSpecification:Item Type: USB to UART Ttl AdapterMaterial: PCBHost Interface: USBDevice Interface: UARTCommunication Range: 50bps -6mbpsUSB Interface:Interface Form: Type AInterface Protection: Resettable Fuse, ESD Electrostatic ProtectionUART Interface:Interface Form: 6PN Curved Pin Header InterfaceInterface Protection: 10 Protection Diode Circuit.Package List:1 x USB to UART Ttl Adapter1 x Cable