B&B Electronics RS-422 manual Removal of Drivers/Card

Removal of Drivers/Card

If you need to remove the card from your system or remove the current driver before installing a possible future driver upgrade:

1.Click on the B&B Com Port under Ports (COM & LPT) and select Uninstall (right click).

2.Click on Multifunction Adapters, select the B&B 3PCIO1 Single- Port Isolated Serial Card. Select Uninstall.

This step clears the entries in the Registry which cannot be easily edited under 2000 or XP.

3.Remove the two sets of driver files from the Windows INF directory. See the screen on the next page.

(These are named by the OS in the sequence of installation. On a clean system they are: Oem0.inf & Oem0.PNF and Oem1.inf

&Oem1.PNF. The .inf versions should be verified by opening it with Notepad, then checking that it is a B&B Electronics file for the card. The PNF version is a compiled copy of the same information.)

You can use the Find, File or Folder function to search for the text 3PCIO1 or B&B or 3pci within the files.

Windows Explorer can also be used to find the OEM files. Explorer view shown next page.

You may need to set your Views (under My Computer) to show all files and folders if the INF directory and .inf files are not visible. Example after Windows Explorer screen.

4. Shut down the system and remove the card.

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445