Dell Inspiron 1721 (Mid 2007) - Manual (Page 180)

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Specifications
LCD interface Low Voltage Differential Signaling (LVDS)
TV support NTSC or PAL in S-video, composite, and
component modes
Audio
Audio type two-channel high-definition audio codec
Audio controller Sigmatel STAC9205 Codec
Stereo conversion 24-bit (analog-to-digital and digital-to-
analog)
Interfaces:
Internal Intel High Definition Audio
External microphone-in connector, stereo
headphones/speakers connector
Speaker two 4-ohm speakers
Internal speaker amplifier 2 Watts per channel into 4 ohms
Volume controls program menus, media control buttons
Display
Type (active-matrix TFT) 17-inch WXGA+
17-inch WXGA+ with TrueLife
17-inch WUXGA with TrueLife
Dimensions:
Height 229.5 mm (9.04 in)
Width 367.2 mm (14.46 in)
Diagonal 433.0 mm (17.0 in)
Maximum resolutions:
WXGA+ 1440 x 900 at 262 K colors
WXGA+ with TrueLife 1440 x 900 at 262 K colors
WUXGA with TrueLife 1920 x 1200 at 262 K colors
Refresh rate 60 Hz
Video (continued)