User`s manual

Universal PCI Board Software Installation
3-9
4. Select an Rx FIFO Trigger from the Rx FIFO Level pull-down list. Rx FIFO trigger levels of High, Middle,
and Low are available, with the default set to High (120 bytes). Select Set the change to all ports option
to apply this Rx FIFO Trigger to all ports.
5. Select a Tx FIFO Level from the Tx FIFO Level pull-down list. Tx FIFO Levels of High, Middle, and Low
are available, with the default set to High (128 bytes). Select Set the change to all ports option to apply
the just defined Tx FIFO Size to all ports.
Tx FIFO
Rx FIFO
High
128
120
Middle
64
60
Low
1
1
6. Click OK to save the port settings, and then click OK in the Properties window to finish the port settings
procedure.
Removing the Driver
1. Go to Device Manager. Remove port driver first, and then remove UPCI driver to prevent occupying the
port number. Expand Ports (COM & LPT) tab, right click MOXA Communication Port 1, and then click
Uninstall to remove port driver. Repeat same procedure until all ports driver are complete removed.