MSI Megabook L745 Getting Started page 35

3. Battery Pack
This notebook will be powered by the battery pack when the AC adapter is
disconnected.
4. Stereo Speaker
Make high quality sound blaster with stereo system and Hi-Fi function
supported.
5. Ventilator
The ventilator is designed to cool the system. DO NOT block the ventilator
for air circulation.
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Getting Started