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 PCI - Speed: Up to 920Kbit/sec - I/O Address: "Plug & Play" - Supports 3.3V and 5V motherboards - DC 5V output for DB9 selected by jumper - Standard and Low Profile back plates included - IRQ Selection: "Plug & Play" - External Connector: 1 x 44 Way D Female - Adapter Cable: 44 Way D Male to 4 x 9 Way D Male - Software Compatibility: DOS, Windows 98SE/ME/NT/2000/XP/Vista/Windows 7/Server 2003, 2008 - Chipset: Oxford semiconductor.