The PCI DSerial-550 offers two 16550 UART serial ports on a single PCI card. Ideal for point-of-sale (POS) system applications, or for connecting a digital camera and PalmPC, the DSerial-PCI adds two additional COM ports to any PCI equipped PC. Each of the two ports is capable of a maximum data throughput rate up to 115.2k. The card requires only one system IRQ saving valuable resources for other expansion cards. Because of its PCI architecture the DSerial-PCI automatically selects the next available IRQ and COM addresses. The two ports share one PCI bus IRQ - even when accessed simultaneously. The DSerial-PCI is 100% compatible with any RS-232 serial peripheral such as an external modem, PalmPC, digital camera, POS (point-of-sale) system, UPS, and TAPI telephone.