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15 Bluetooth antenna (some models)
If your computer comes with the Integrated Bluetooth features, the antenna is located under the right
side of the palm rest.
16 PCI Express Mini Card slot for wireless LAN/WiMAX (some models)
Your computer might include a PCI Express Mini Card for wireless LAN/WiMAX in the PCI Express Mini Card
slot which enables wireless LAN/WiMAX communications.
19 Fn key
Use the Fn key to take advantage of ThinkPad
®
functions. To use ThinkPad functions, press Fn+ the required
function key marked in blue.
20 Volume control buttons
The built-in volume buttons enable you to quickly adjust the volume of the sound from your computer, mute
the sound entirely, or set the microphone to mute.
For details, refer to the instructions in “Volume and mute buttons” on page 30.
Right-side view
Figure 2. ThinkPad L420 and L520 right-side view
1 Power jack
2 Optical drive
3 Media card reader
4 USB connectors (right)
5 Wireless radio switch
1 Power jack
The ac power adapter cable connects to the computer power jack to provide power to the computer and
charge the battery.
2 Optical drive
Your computer has a slot for an optical drive.
4 User Guide