Sunix SER5066A, universal PCI serial communication board, allows users to add or expand eight RS-232 ports on PC-based system. The card is compatible with both 64/32-bit PCI architecture supporting 3.3 and 5V Bus, allowing it to be installed in virtually any PC-based systems. Sunix SER5066A card has 128-bytes onboard FIFO buffer. It is built with many of Sunix advanced features and technologies, making it the solution for commercial and industrial automation applications.