This card is finished to a high standard to allow for easy and safe installation, and it is backed by the LINDY full technical support service. The finger contacts are gold-plated to limit oxidisation and extend the life of the card.Bus Type: 32 Bit PCIVoltage: 3.3V (No 5V support)Software Compatibility: DOS, Windows 98SE/ME/NT/2000/2003/XP/Vista, Linux3 Year WarrantySerial Port:16C650 32 Byte FIFOSpeed: Up to 921KbpsI/O Address: COM 1-8IRQ Selection: 3,4,5,7,9Card Connector: 2 x 9 Way D MaleParallel Port:ECP/EPPSpeed: Up to 2.7MBpsI/O Address: LPT 1-6IRQ Selection: 3,4,5,7,9Separate Back Plate: 25 Way D Female