Dell P55F Manual page 4

Specifications
Right
Front
Left
Right
1 Power button
Press to turn on the computer if it is turned off or in
sleep state.
Base
Press to put the computer in sleep state if it is turned on.
Press and hold for 4 seconds to force shut‑down the
computer.
2 Volume-control buttons (2)
Press to increase or decrease the volume.
Display
Views
1 2
NOTE: You can customize the power‑button
behavior in Power Options. For more information,
see Me and My Dell at dell.com/support/manuals.
3 4
3 USB 2.0 port
Connect peripherals such as storage devices, printers,
and so on. Provides data transfer speeds up to
480 Mbps.
4 Media-card reader
Reads from and writes to media cards.