Dell Studio 1557 (Late 2009) - Manual (Page 88)

86
Specifications
Audio
Audio type IDT 92HD73C High
Definition audio codec
Audio controller 5.1 channel High
Definition audio
Stereo conversion 24‑bit (analog‑to‑digital
and digital‑to‑analog)
Internal Interface Intel High Definition
audio
Speaker two 4.5‑ohm speakers
and one 4 ohm
subwoofer
Internal speaker
amplifier
2 watt per channel into
4.5 ohm and 3 watt per
channel subwoofer
Volume controls 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
viewing angle
66°
Keyboard (Backlit)
Number of keys 86 (U.S. and Canada);
102 (Europe); 105 (Japan);
104 (Brazil)
Layout QWERTY/AZERTY/Kanji