Dell XPS 11 (9P33, Late 2013) - Manual (Page 5)

Keyboard
Type Backlit touch matrix keyboard
Shortcut keys Some keys on your keyboard have two symbols
on them. Two symbols indicate that the key
can be used to type alternate characters or to
perform secondary functions.
To type alternate characters, press Shift and the
desired key. To perform secondary functions,
press Fn and the desired key.
NOTE: You can define the primary behavior of
the shortcut keys by changing the Function Key
Behavior in System Setup.
Camera
Resolution:
Still image 0.92 megapixel
Video (maximum) 1280 x 720 (HD) at 30 FPS
Diagonal viewing angle 74 degrees
Touchpad
Resolution:
Horizontal
Vertical 1211 dpi
1645 dpi
Dimensions:
Width 4.09 in (104 mm)
Height 2.41 in (61.3 mm)