The IOCrest SI-PEX50054 2 port DB9 serial and 1 port DB25 parallel PCI-E 1.0 x1 controller card turns a single pci-express x1 slot into two rs-232 serial ports and one EPP/ECP parallel port. Suitable for installation in a small form factor computer, the PCI-e x1 serial/parallel card includes an optional low profile/half-height mounting bracket that makes installation easy. The combo card is supported in virtually any Microsoft Windows operating environment.