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Right-side view
Figure 2. ThinkPad T520, T520i, and W520 right view
1 Security keyhole
2 Ethernet connector
3 Serial Ultrabay enhanced 4 Combo audio jack
5 ExpressCard slot
6 Media card reader slot
1 Security keyhole
Your computer comes with a security keyhole. You can purchase a security cable and lock to t this keyhole.
2 Ethernet connector
Connect your computer to a 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.
Two indicators, to the upper right and left of the connector, show the status of the network connection.
When your computer connects to a LAN and a session with the network is available, the upper right indicator
is solid green. While data is being transmitted, the upper left indicator blinks yellow.
For details, refer to the instructions in “Access Connections” on page 24
.
Note: If you attach your computer to the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series
3, ThinkPad Mini Dock Plus Series 3, or ThinkPad Mini Dock Plus Series 3 (170 W) and use an Ethernet
connector, use the Ethernet connector on the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock
Series 3, ThinkPad Mini Dock Plus Series 3, or ThinkPad Mini Dock Plus Series 3 (170 W), not the one
on the computer.
6 User Guide