Unitek 2 Port Serial Pci-E Card Includes Low Profile Brackets.

This PCI-Express I/O card uses the latest PCI-Express interface standard for expansion bus, enabling this card to be installed on to any computer with PCI-Express slot. Some of the latest mainboards in the market today no longer come with a serial or parallel port. By using this card, the end user can add serial and parallel ports to their computer, allowing them to connect their serial and parallel devices. The PCI-Express I/O card offers superior performance and unmatched data transfer rates. It is also ideal for industrial automation applications. 

Supports DOS, Windows 10/8/7/Vista/XP/2000/Server 2003-2008 (32/64-bit), Linux and Mac OS/X 10.5 operating system