"The LavaPort-650 breaks the speed and IRQ bottlenecks that limit expandability and performance in today's PCs. The most common method of connecting an external peripheral (modem, digital camera, etc.) to a PC, is through a serial port. The problem is that the ports that ship with today's PCs are just too slow to handle the speeds of 56K and ISDN modems. Improving connection speeds without sacrificing PC resources is a real priority. The LavaPort-650 does just that! This PCI bus single 9-pin serial port with 16650 UART supports data throughput rates up to 460.8k bps. The LavaPort-650 adds one accelerated COM port to any PCI equipped PC saving valuable resources for other expansion cards. Because of its PCI architecture the card automatically selects the next available IRQ and COM addresses, and is capable of sharing IRQs with other PCI devices. The LavaPort-650 is a must when connecting a 56K external modem or ISDN terminal adapter. PCI bus single 9-pin Ultra High Speed 16650 UART Serial Port. Adds one Accelerated COM Port to any PCI equipped PC - capable of data transmission rates up to 460.8k bps (including 230.4k bps). Integrated 32-byte FIFO buffer with software configurable Tx/Rx triggers, 4X clock and on-board flow control which guarantee errorless data transmission even at top speed. Easy PlugandPlay installation. Automatically selects next available IRQ and COM address - just plug in and go! Includes Lava Com Port Redirect and Lava Modem Speed Set utility software for easy configuration of 230.4k bps capable external modems. 100% compatible with all 56K external modems and ISDN external terminal adapters. Ships with drivers for Windows 3x, Windows95/98 and Windows NT 4.0."