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Model : 
UC232A
 
Subject : 
How to upgrade drivers when installing a new UC232A
 
Description : 

I had an older UC232A that stopped working and bought a new one.

After installing the newest driver, it doesn't work after installing.



 
Solution : 
The older driver may not be totally cleared before installing a new UC232A.
Please make sure all the older drivers are properly uninstalled. 
 
1. Disconnect the UC232A from the computer
2. Type appwiz.cpl in Run to call up "Add or Remove Programs"
3. Uninstall UC232A driver
4. Go to C:\windows\system32\drivers, find ser2at.sys and serenum.sys and manually delete them
5. Restart the system and install the latest driver.
6. Connect the  UC232A to your computer

For details, please refer to the video clip below. If your upgrade isn't successful, please contact ATEN's Tech support.
 
Related FAQ : 
Older UC232A's can not support Windows 8 and later OS
Finding drivers for UC232A
Windows 10 driver WHQL Approved for UC232A
UC232A support X64 Operating System
Windows 10 support
 

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