The LavaPort-ISA uses the 16650 UART incorporating a 32-byte FIFO buffer - twice the size of a standard 16550 UART.

The LavaPort-ISA Windows drivers are extremely efficient in handling the FIFO buffer. Unlike a 16550 UART port, where the CPU must verify the buffer status each time it loads a byte into the UART, the LavaPort-ISA allows the CPU to send & receive burts of data from the port without error. The LavaPort-ISA detects flow control signals without intervention from the CPU, which a 16550 UART port is not capable of doing.

• Adds one ultra high-speed 16650 UART
  serial port to any ISA-equipped PC
• Serial port supports up to 460.8 kbps throughput rate
• Integrated 32-byte FIFO buffer with software configurable Tx/Rx triggers
• Configurable as Com 1 through Com 4
• Serial port selectable for any of IRQ 2/3/4/5/10/11/12/15
• Lava Lifetime Warranty