Well, first, the clock crystal is located on the card itself and ticks at 7.37MHz or 14.7MHz. This is much faster than the 1.84 MHz motherboard clock. Second, these cards have a faster 16750 UART with much larger buffers. These serial port cards can operate at around 1 MB per second. They come with Windows drivers that show Windows how to use the higher speeds.
Installation is a snap.
Windows 95 detect it, and when prompted for the drivers, install them. In a non-PnP OS, you might have to flip some jumpers. If you are using an internal modem, you are limited to 115Kbps. But, with an external modem, installing a high speed serial port card can remove the bottleneck you would hit using high speed modems. Corp. All Rights Reserved.