||CH384 datasheet, PCI-Express bus to multiple serial ports and printer/parallel port chip . Supports PCIE converts to Quad UARTs, Quad UARTs and a printer/parallel port, 8 UARTs, 28 UARTs,, etc. Supports up to 8Mbps baud rate, used for PCIE high-speed serial port with automatic hardware flow control, serial ports networking, RS485 communication, parallel/printer port expansion, etc. Supports Windows/Linux/macOS, etc. This datasheet is about PCIE to Quad UARTs and printer/parallel port.