This high speed 16950 Serial PCI Card uses a 16 Byte buffer simultaneously in both transmit & receive channels, reducing the number of CPU interrupts while improving system performance. The card lets you connect up to 8 RS-232 serial devices to the host computer, & can be installed in either a 3.3V or 5V PCI/PCI-X slot. Ideally suited to industrial applications, the buffered Serial PCI card is compatible with a broad range of operating systems, including Windows, DOS, Linux, & UNIX operating environments.