Dell Studio 1555 Setup Manual page 88

Specifications
Audio
Audio type
Audio controller
Stereo conversion 24‑bit (analog‑to‑digital
Internal Interface
Speaker
Internal speaker
amplifier
Volume controls
86
IDT 92HD73C High
Definition audio codec
5.1 channel High
Definition audio
and digital‑to‑analog)
Intel High Definition
audio
two 4.5‑ohm speakers
and one 4 ohm
subwoofer
2 watt per channel into
4.5 ohm and 3 watt per
channel subwoofer
software program menus
and media controls
Camera (Optional)
Pixel 2.0 megapixel
Video resolution 320 x 240 ~1600 x 1200
(640 x 480 at 30 fps)
Diagonal 66°
viewing angle
Keyboard (Backlit)
Number of keys 86 (U.S. and Canada);
102 (Europe); 105 (Japan);
104 (Brazil)
Layout QWERTY/AZERTY/Kanji