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 , 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 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. PackageList: 1 x Serial Port Expansion Card 1 x Driver CD