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Note: The USB device connected to the USB 3.0 connector might influence the wireless wide area network
(WAN) and Global Positioning System (GPS) functions of your computer. If your computer cannot establish
wireless WAN communications, or if your location cannot be pinpointed through the GPS function of your
computer, detach the device from the USB 3.0 connector.
The High-Definition Multimedia Interface (HDMI) connector is a digital audio and video interface. It enables
you to connect your computer to a compatible digital audio device or video monitor, such as a DVD player
or a high-definition television (HDTV).
Mini Ethernet connector
The mini Ethernet connector makes your computer thinner than the ones with a standard Ethernet connector.
To connect your computer to a local area network (LAN) through the mini Ethernet connector, you need an
Ethernet extension adapter. The Ethernet extension adapter is available as an option and shipped with
some computer models only. For information about using and purchasing the Ethernet extension adapter,
see “Cabled Ethernet connections” on page 28.
To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet extension
Always On USB 3.0 connector
You can connect headphones or a headset with a 3.5-mm (0.14-inch), 4-pole plug to the audio connector to
listen to the sound from the computer.
If you are using a headset with a function switch, do not press this switch while using the headset. If you
press the switch, the headset microphone is disabled, and the integrated microphones on the computer is
Note: The audio connector does not support a conventional microphone. For more information, see “Using
audio features” on page 32.
The fan louvers and internal fan enable air to circulate in the computer to ensure proper cooling, especially
the cooling of the microprocessor.
Note: To ensure proper airflow, do not place any obstacles in front of the fan louvers.