Since drivers are integrated into the operating system, you update them by checking for the latest ChromeOS version: Automatic Updates
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For the Dell Chromebook 11 3180 Go to product viewer dialog for this item. Since drivers are integrated into the operating system,
: You can view manuals and documentation on the Dell Support Chromebook 11 3180 page. Third-Party Drivers (Windows/Linux) dell chromebook 11 3180 drivers link