WCH382L PCIe x1 to Dual RS232 Serial Port Card 9-Pin / Parallel +Serial Port Adapter for POS, ATM, Industrial Automation – Compatible with Windows & Linux
The PCI Express Dual RS-232 Serial Card is a high-performance COM port expansion solution designed for POS systems, ATMs, industrial automation, and legacy serial device integration. Featuring two 9-pin RS-232 ports, the card supports data rates up to 230.4 Kbps and provides full modem control signals for maximum device compatibility.
Compliant with PCI Express Revision 1.1, the card offers stable and reliable communication and is compatible with PCIe x1/x4/x8/x16 slots. Equipped with 16C550 UART architecture and a 256-byte FIFO buffer, it ensures smooth data flow, even in high-demand applications. The card compatible with Windows 2000 to Windows 10, Linux, and DOS, making it ideal for both new and legacy systems.
General parameters
Compliant with PCI-Express Specification Revision 1.1
PCI-Express Single-Lane (x1) Bus Bandwidth 2.5Gbps
Compatible with DOS, Windows 8 / 7 / Vista / XP / 2000 / Server 2003-2008 32/64-bit, Linux, etc. Operating System

Serial Interface (RS232)
Conforms to industry standard 16C450/16C550 UART
Built-in 256-byte FI FO and built-in H/W, S/W flow control
Data transfer rate up to 250Kbps per serial port (1Mbps for customized version)
Baud rate: 230.4Kbps
Serial Communication Parameters Data Bits: 5,6,7,8 Stop Bits: 1,2 Odd 8
Stop Bit: 1, 2
Parity: None, Even, Odd, Space, Mark
Flow Control: R TS/C TS, X ON/X OFF
I/O Address: assigned by BIOS
IRQ: assigned by BIOS
Serial Signal RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND