User manual
    Removing a Virtual COM Port 
Manual Documentation Number: ESP904-0504  Chapter 7  45 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Figure 31. The Control Panel Window 
Step 3: Select Device Manager in the Systems Properties window. In the 
Device Manager window select the 
+ next to Ports (COM LPT) to 
expand. 
Figure 32. The Device Manager Window 
  Removing a Virtual COM Port 
46  Chapter 7  Manual Documentation Number: ESP904-0504 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Step 4: Highlight 
ESP904 (COM #) to be removed, go the Action tab at the 
top of window and select 
Uninstall. A confirm Device Removal 
window will appear. 
Figure 33. Confirm Device Removal 
Step 5: Select OK to proceed. 
The ESP904 COM # will be removed and the Device Manager window will 
refresh and display the remaining COM ports 










