The PCI-Express Multi-I/O card is designed based on a high performance PCI serial communication chip form ASIX Electronicscompany. providing multiple serial device connectivity to your desktop computer ,Most of the latest motherboards on longer come with a serial port,By using this card, user can add multiple serial ports to their computer for connecting serial devices ,the product offers superior performance and unmatched data transfer, it is ideal for industrial automation applications. Features: Single-lane (X1) PCI Express End-point Controller with integrated PHY Compliant with PCI Express Base Specification, Revision 1.1 Compliant with PCI Express card specifications Power supply : 1.2V, 3.3V