If you would rather allow local administrators to have the ability to install new devices and update drivers for existing devices regardless of the device installation restrictions you have applied to the system, you can do this as follows using local Group Policy:
1. Type gpedit.msc in the Start Search box and hit Enter.
2. Click Continue when the UAC prompt appears.
3. Navigate to the following policy location:
Computer Configuration\Administrative Templates\System\Device Installation Restrictions
4. Enable the following policy setting:
Allow administrators to override device installation policy
Cheers,
Mitch Tulloch, MVP
http://www.mtit.com