Features 1、Serial port expansion card can automatically assign IRQ and I/O addresses, very practical 2、There is no switch, no jumper, which can allow you to easy setting with software, very convenient 3、The product adopt 32-bit bus design, support PCI 2.1 Specification, very useful in your life 4、PCI to COM serial port expansion card using high-speed I/O controller (16C550C or compatible UART) 5、Support for Windows95/98/98SE/2000/ME/NT4.0/XP/VISTA (32‑bit and 64‑bit)/WIN7(32‑bit and 64‑bit)/Linux and DOS/OS and other systems Specification ​​​Item Type: Serial Port Expansion Card Material: PCB Color: Black board Transfer Type: PCI to COM 9-pin Transmission Rate: Up to 1 Mbytes/sec 32-bit bus design, support PCI 2.1 Specification Adopt high-speed I/O controller (16C550C or compatible UART) Compatible System: For Windows95/98/98SE/2000/ME/NT4.0/XP/VISTA (32-bit and 64-bit)/WIN7(32-bit and 64-bit)/Linux and DOS/OS, etc. Package List 1 x Serial Port Expansion Card 1 x Driver CD