The RocketPort uPCI 8 Port Low Profile serial port expansion card is compatible with all current 3.3 and 5.0 Volt PCI bus architectures. It's half height design enables it to be used in both standard or low profile servers. It provides eight "native" serial ports utilizing a single 32 or 64 bit PCI card slot. Several external serial interface modules are available sold separately that support RS 232 or RS 422 serial communications at speeds up to 230 Kbps. Individual serial ports on the same interface can be configured for either RS 232 or RS 422 communication. External interfaces with additional surge protection are also available. RocketPort products are designed with larger transmit and receive buffers than those available in a standard 16550 UART found in standard PC serial ports and low end serial cards, enabling them to handle the transmission of large amounts of data reliably and efficiently. They also utilize an on board 36MHz processor, minimizing host CPU utilization. RocketPort products do not require the assignment of interrupts, simplifying installation and eliminating conflicts with other server cards. Drivers are available for popular operating systems. The product is fully compliant with the RoHS directive 2002/95/EC.