Lenovo ThinkPad E555 User Manual page 21

2 Fan louvers
The fan louvers and the 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 obstacle in front of the fan louvers.
3 Ethernet connector
Connect the computer to a local area network (LAN) with the Ethernet connector.
DANGER
To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet connector.
You can only connect an Ethernet cable to this connector.
The Ethernet connector has two indicators that show the status of the network connection. When the green
indicator is on, it indicates that the computer is connected to a LAN and a session with the network is
available. When the indicator blinks yellow, data is being transmitted.
Note: If the computer is connected to a supported ThinkPad OneLink Dock or ThinkPad OneLink Pro Dock ,
use the Ethernet connector on the dock to connect to a LAN instead of the one on the computer.
4 VGA connector
Use the VGA connector to connect the computer to a VGA-compatible video device, such as a VGA monitor.
5 HDMI connector
Use the HDMI connector to connect the computer to an HDMI-compatible audio device or video monitor,
such as a high-definition television (HDTV).
Note: If you connect the computer to a supported ThinkPad OneLink Dock, use the HDMI connector on
the dock, not the one on the computer.
6 USB 3.0 connector
The USB 3.0 connector is used for connecting USB-compatible devices, such as a USB printer or a digital
camera.
Note: When you attach a USB cable to this USB connector, ensure that the USB mark is facing upward.
Otherwise the connector might get damaged.
7 Always On USB 3.0 connector
By default, the Always On USB connector enables you to charge some mobile digital devices and
smartphones in the following situations:
• When your computer is on or in sleep mode
• When your computer is in hibernation mode or is turned off, but connected to ac power
If you want to charge these devices when your computer is in hibernation mode or is turned off, and the
computer is not connected to ac power, do the following:
• For Windows 7: Start the Power Manager program and click the Global Power Settings tab. Then select
Enable even when the computer is off, and click OK or Apply.
• For Windows 8.1: Press the Windows key to go to the Start screen. Click Lenovo Settings ➙ Power.
Then select Enable even when the computer is off in the Always On USB area.
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Chapter 1 Product overview
5