Specification Model USB to TTL B ModuleChipset Original CH343GOperating Voltage Levels Switch between 3 3V and 5VTransmission Speed Supports baud rates from 50bps to 6MbpsInterface Type USB to UARTOperating Systems Compatible with Windows Win7 8 8 1 10 11 Macs Linux AndroidProduct categoryIndustrial USB TO TTL converterHost portUSBData rate50bps 6MbpsDevice PortUARTUSB portConnector USB AProtection resettable fuse ESD protectionUART portConnector 8PIN fool proof headerProtection IO protection diodeIndicatorPWR power indicator turns red when USB voltage is detectedTXD TX indicator turns red while the USB port is sending dataRXD RX indicator turns red while the device port is receiving data Features 1 Stable Data Transmission Equipped with CH343G chip for reliable communication 2 Multi Protection Design ESD Electrostatic Discharge IO protection and resettable fuse for enhanced safety 3 Voltage Selection Adjustable voltage levels 3 3V 5V 4 Indicator LEDs Power TXD and RXD indicator lights for visualizing module status 5 User Friendly Connector Fool proof TTL design for convenient usage 6 Multi System Compatibility Works seamlessly across Windows Linux Macs and Android platforms Package Includes 1 x USB to TTL B Module