PCI Express interface IEEE1284 Parallel communication boards meet the PCI Express Base Specification Revision 1.1 specification is compatible with PCI Express x1, x2, x4, x8 and x16 lane and PCI/PCI-x Bus, allowing it to be installed in any PC-based system. With this Parallel board, users can expand two parallel ports to their system, allowing them to use parallel devices further. It is ideal for printers, IC programmers, ZIP Drives, or any Parallel devices*.