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3.2.2. Remove Unused Devices
Removing unused or unnecessary devices can improve performance. For instance, a guest tasked as a web server is unlikely to require audio features or an attached tablet.
Refer to the following example screen capture of the virt-manager tool. Click the button to remove unnecessary devices:
![Remove unused devices](https://access.redhat.com/webassets/avalon/d/Red_Hat_Enterprise_Linux-6-Virtualization_Tuning_and_Optimization_Guide-en-US/images/85134caef8e635c9748bf690d8cd53f7/virt-manager-remove-unused-devices.png)
Figure 3.2. Remove unused devices