Lenovo 11CB User Manual page 10

6. Audio line-in connector
7. Ethernet connector
8. Cable lock slots (2)
9. PCI-Express card area
10. Padlock loop
11. Security-lock slot
12. Power cord connector
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Lenovo V55t-15API User Guide
Used to receive audio signals from an external audio device, such as a stereo
system. To attach an external audio device, connect a cable between the audio
line-out connector of the device and the audio line-in connector of the computer.
Used to connect an Ethernet cable for network access.
Used to secure a cable lock.
To improve the operating performance of the computer, you can connect PCI-
Express cards into this area. Depending on the computer model, the connectors
in this area vary.
Used to secure a padlock.
Used to secure a Kensington-style cable lock.
Used to connect the power cord to your computer for power supply.