User`s manual

Universal PCI Board User’s Manual Driver Installation: Windows NT
6-8
3. Select a port to configure and click Port Setting.
Under Port Number, select a COM number to assign to the serial port. Select Auto
Enumerating COM Number to map subsequent ports in numerical order. For example, if
COM 3 is assigned to Port 1, then COM 4 will be automatically assigned to Port 2.
4. Select an Rx FIFO Trigger and Tx FIFO Size. The default Rx FIFO Trigger is 120 bytes (high
level). The default Tx FIFO Size is 128 bytes (high level). Select Set the change to all ports to
use this setting for all serial ports on the board.
Tx FIFO Rx FIFO
High 128 120
Middle 64 60
Low 1 1