Lenovo ThinkPad L540 User Manual page 29

1 Power connector
Connect the ac power adapter to the power connector to provide ac power to the computer and charge
the battery.
2 Ethernet connector
Connect the computer to a local 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 top-left
indicator is solid green, it indicates that the computer connects to a LAN and a session with the network is
available. When the top-right indicator blinks yellow, it indicates that data is being transmitted.
Note: If you attach the computer to a docking station, use the Ethernet connector on the docking station to
connect to a LAN, not the one on the computer.
3
USB 2.0 connector
The USB 2.0 connector is used for connecting USB-compatible devices, such as a USB printer or a digital
camera.
Attention: When you attach a USB cable to this connector, ensure that the USB mark is facing upward.
Otherwise the connector might be damaged.
4 Security-lock slot
To protect your computer from theft, you can purchase a security cable lock that fits the security-lock
slot to lock the computer to a stationary object.
Note: You are responsible for evaluating, selecting, and implementing the locking device and security
feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance
of the locking device and security feature.
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Chapter 1 Product overview
13