StarTech DB9/DB25 PCI-Express Serial & Parallel Combo Card

The StarTech DB9/DB25 PCI-Express Serial & Parallel Combo Card is the ideal solution for adding legacy connectivity to modern desktop computers. This versatile interface card provides a DB25 parallel port and a DB9 RS232 serial port via a single PCI-Express slot, enabling you to connect a wide range of older equipment to current systems. Whether you need to interface with industrial printers, barcode scanners, scientific sensors, point-of-sale terminals, or specialised legacy hardware, this adaptor restores essential connectivity.

Engineered around the reliable Asix AX99100 chipset, the card delivers robust performance with maximum transfer rates of up to 2.5 Mb/s on the parallel port and 921.6 Kb/s on the serial port. The parallel port is fully IEEE 1284 compatible, supporting SPP, Byte, Nibble, and ECP modes for broad device compatibility. The serial port features a 16950 UART with a 256-byte FIFO buffer, ensuring reliable data flow and reducing CPU overhead during high-speed communication.

A unique feature is the optional SATA power input, which allows you to provide adjustable power (5V–12V) on pin 9 of the serial port. This is particularly useful for powering devices that require supplementary power directly from the port. The card is compliant with PCI Power Management 1.2 for efficient power usage and installs easily into any full-size PCI-Express 2.0 x1 slot.

Key Features & Specifications:

• Dual Legacy Ports: Integrates one DB25 parallel port and one DB9 serial (RS232) port.
• High-Performance Chipset: Built around the Asix AX99100 controller for stability and speed.
• Fast Data Transfer: Parallel port supports up to 2.5 Mb/s; serial port supports up to 921.6 Kb/s.
• Broad Compatibility: Parallel port is IEEE 1284 compliant. Serial port uses a 16950 UART with a 256-byte FIFO buffer.
• Optional Power Feed: Includes a SATA power connector to supply adjustable