One Port Parallel PCI Card (Enhanced Parallel Port) The Parallel-PCI 3.3v has all the operational features of the standard Parallel-PCI. Compatible with 32-bit and 64-bit 3.3v PCI slots, it is the ideal means of adding an EPP parallel port to servers and PCs that use PCI-X or 3.3 volt conventional PCI slots.System Requirements:1 3.3 volt PCI slotPorts/Connectors:1 25-pin EPP parallel portProduct Details: