Auto-Zone Control Systems SS0070 USB-Link Technical Guide, Installation Instructions for the SS0070 USB-Link (Version 01D) - Manual (Page 15)

USB-Link Technical Guide
15 Operator Interface
4. To assign a port number less than 10, click on
<Advanced> . The Advanced Settings Window
will appear.
5. In the COM Port Number drop box, select which COM port
you wish to use. Make sure you select a COM port number
that is not currently in use (you can see the ports in use in
the Device Manager Window). Select a port that is less than
10.
NOTE: Windows ® will assign a port number to every device that
has ever been installed on your computer. So if there are
no available ports below 10, choose a port number less
than 10 for a device listed that you know you are not
currently using.
6. Once you select the correct COM port number,
click <OK> and close any windows opened in the process
of changing the port number. Make note of this number
because you will need it for your Prism setup.
Troubleshooting the COM Port Number
Changing the USB COM Port Number
When the USB-Link is fi rst plugged in, it will be assigned a COM
port number to be used for communicating with the Prism II
software. If the port number is 10 or greater, it needs to be changed to
a value less than 10 to be recognized by Prism II.
1. Click <Start> , click <Control Panel> , click
<System> , click the <Hardware> tab, and then click
<Device Manager> to get to the Device
Manager Window.
2. Click on the plus sign next to Ports to see all of the COM
ports.
3. Right-click on “USB Serial Port (COM#)” and select
<Properties> . In the Properties Window, select the <Port
Settings> tab.