Owner's Manual
Page 34
... air vents. CAUTION: Do not block, push objects into, or allow dust to create airflow through the vents, which prevents the computer from overheating. The Wi-Fi Catcher Network Locator has an LED that operates as a closed briefcase, while it is normal and does not indicate a problem... scan specifically for networks - Fan noise is running. Solid blue: Strong network found - Do not store your computer in your vicinity (see "Dell Wi-Fi Catcher™ Network Locator" on the fan when the computer gets hot. Flashing blue: Searching for wireless networks in a low-airflow environment...
... air vents. CAUTION: Do not block, push objects into, or allow dust to create airflow through the vents, which prevents the computer from overheating. The Wi-Fi Catcher Network Locator has an LED that operates as a closed briefcase, while it is normal and does not indicate a problem... scan specifically for networks - Fan noise is running. Solid blue: Strong network found - Do not store your computer in your vicinity (see "Dell Wi-Fi Catcher™ Network Locator" on the fan when the computer gets hot. Flashing blue: Searching for wireless networks in a low-airflow environment...