B&B Electronics 3PCIU4 - Manual (Page 49)

Setting Driver Options
Manual Documentation Number 3PCIoUx-1008 Chapter 4 43
Available names for COM numbers are shown. Select a new number
from those not “in use”. COM numbers from COM1 to COM256
may be available. COM numbers “in use” may be used by
motherboard ports, modems, virtual COM ports for network serial
server devices or FAX modems. Formerly installed USB to serial
adaptors, PCI cards or other hardware may have reserved a COM
number. The device may need to be added back to the system, then
the software removed. Advanced editing of the registry may
required to clean up the problem. Special permissions are required
with 2000 or XP.
Figure 32. Changing the COM Port Name/Number
2. After selecting a new COM name/number, Click OK, then click
OK again on the Settings page.
After returning to the Device Manager screen, it should refresh
automatically. The name/number of the port in the Device Manager
list should now show the change.