Lenovo ThinkPad T560 User Manual page 22

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 network status indicators. When the green indicator is on, the computer is
connected to a LAN. When the yellow indicator blinks, data is being transmitted.
Note: If the computer is connected to a docking station, use the Ethernet connector on the docking station
instead of the one on the computer.
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Smart-card slot (available on some models)
Smart cards can be used for authentication, data storage, and application processing. Smart cards also
might provide strong security authentication for single sign-on (SSO) within large organizations. For more
information, see "Using a media card or a smart card" on page 39.
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User Guide ThinkPad T560 and P50s