Dual RS-232 COM Port Expansion Version: Instantly adds two 9-pin serial ports (DB9) to any desktop PC via a PCIe x1 slot \u2013 ideal for barcode scanners, modems, printers, and industrial devices.
Serial + Parallel Port Port Expansion Version:Instantly adds 1* 9-pin serial ports (DB9) +1*Parallel Port(25Pin) to any desktop PC via a PCIe x1 slot \u2013 ideal for barcode scanners, modems, printers, and industrial devices.
High Compatibility with Multiple OS:Compatible with Windows XP/7/8/10/11 (32/64-bit), Linux, and DOS without issue \u2013 plug-and-play on most systems with included drivers.
Stable High-Speed Communication:Supports up to 230.4 Kbps baud rate with 256-byte FI FO buffer and both hardware (R TS/C TS) and software (X ON/X OFF) flow control.
Standard UART & Modem Control Signals:Based on 16C450/16C550 UART, offering full support for TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND signals to ensure reliable device communication.
PCIe x1 Universal Fit:Fully compatible with x1/x4/x8/x16 PCIe slots, ensuring flexible installation on most desktop PCs and workstations.