15.Secure Digital (SD) memory-card reader
16.contactless smart card reader
17.touchpad
18.touchpad buttons (2)
19.trackstick buttons (3)
Figure 4. Back View
1.network connector
2.security cable slot
3.modem connector
4.device status lights (power, hard disk, and battery)
5.power connector
6.USB 2.0 connector
20.trackstick
21.keyboard
22.volume control buttons
23.device status lights (hard disk, battery, and wireless)
7.VGA connector
8.USB 3.0 connector
9.audio connector
10.cooling vents
11.smart card slot
WARNING: Do not block, push objects into, or allow dust to accumulate in the air vents. Do not store your Dell computer in a
4