A SERVICE OF

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The following illustration shows the location of controls and components on the front of the computer.
Attention: Be careful not to block any air vents on the computer. Blocked air vents can cause overheating.
1. Power button 5. Headphone connector
2. Memory card reader (selected models only) 6. Optical Drive (selected models only)
3. USB connectors
7. Hard disk drive indicator
4. Optical drive eject button
8. Microphone connector
Attention: The effective range of the Built-in IR Emitter is 10 feet (3m).
22 Lenovo H520sHardware Maintenance Manual