USB to 4 Way TTL Module CH9344 12Mbps Baud Rate UART Serial Port Module UART Transceiver 3.3V Item Type: USB to TTL Module Material: PCB Working Voltage: 3.3V Features: 1. High speed USB 2.0 interface, peripheral components only require crystals and capacitors. 2. Compatible with 16C550 asynchronous serial port and enhanced. 3. Support 5, 6, 7, or 8 data bits, or 2 stop bits. 4. Support odd, even, no parity, blank 0, flag 1, and other verification methods. 5. Support RTS and CTS hardware automatic flow control. 6. Support half duplex, provide sending status, support RS485 switching, and is enabled by default. 7. Provide 12 GPI0 for arbitrary input and output. 8. Programmable communication baud rate, support 115200bps and up to 12Mbps communication baud rate. 9. Part of the IO in the 0 1 2 zone of the serial port is independently powered, support 3.3V, 2.5V, and 1.8V power supply voltages, serial port 3 supports 3.3V power supply. 10. Serial driver support: for Windows XP, for Vista, for Win7, for vin8, for Vinto, for winserver, for Linux, etc. 11. Provide LOFP 48 packaging, compatible with RoHS.