HP 621 Compaq 320, 321, 420, 421, 620, 621 Notebook PCs and HP 420, 620 Notebo - Page 27
Multimedia components
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Component (3) Vents (3) (4) Memory module compartment WLAN module compartment Hard drive bay Multimedia components Description Enable airflow to cool internal components. NOTE: The computer fan starts up automatically to cook internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. Contains the memory module slot. Contains the wireless LAN module slot. CAUTION: To prevent an unresponsive system and the display of a warning message, replace the WLAN module with only a module authorized for use in the computer by the governmental agency that regulates wireless devices in your country. If you replace the module and then receive a warning message, remove the module to restore computer functionality, and then contact technical support. Holds the hard drive. Component (1) Webcam light (select models only) (2) Webcam (select models only) Description On: The webcam is in use. Records audio and video and captures still photographs. Multimedia components 17