PCI single DB9 16550 UART serial board The Lava SSerial-PCI improves your data throughput rates saving valuable ISA slot real estate. The most common method of connecting an external peripheral (modem, digital camera, etc.) to a PC is through a serial port. A lot of PC users are looking for a product that would improve connectivity and solve their real estate problems. The SSerial-PCI does just that! This PCI bus single 9-pin serial port with 16550 UART supports data throughput rates up to 115.2k bps, it saves an ISA slot, and fully supports PCI IRQ sharing.