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The SC16C550 is an upward solution that provides 16 bytes of transmit and receive FIFO memory, instead of none in the 16C450. The SC16C550 is designed to work with high speed modems and shared network environments that require fast data processing time. Increased performance is realized in the SC16C550 by the larger transmit and receive FIFOs. This allows the external processor to handle more networking tasks within a given time. In addition, the four selectable levels of FIFO trigger interrupt and automatic hardware/software flow control is uniquely provided for maximum data throughput performance, especially when operating in a multi-channel environment. The combination of the above greatly reduces the bandwidth requirement of the external controlling CPU, increases performance, and reduces power consumption.