Dell S2421NX - Preset Display Modes; Electrical Specifications

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Preset display modes
S2421HN/S2421NX/S2721HN/S2721NX
Display Mode Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(Horizontal/
Vertical)
VGA, 720 x 400 31.5 70.0 28.3 -/+
VGA, 640 x 480
31.5
60.0
25.2
-/-
VESA, 640 x 480 37.5 75.0 31.5 -/-
VESA, 800 x 600 37.9 60.0 40.0 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+
VESA, 1024 x 768 48.4 60.0 65.0 -/-
VESA, 1024 x 768 60.0 75.0 78.8 +/+
MAC, 1152 x 864
67.5
75.0
108.0
+/+
VESA, 1280 x 1024 64.0 60.0 108.0 +/+
VESA, 1280 x 1024 80.0 75.0 135.0 +/+
VESA, 1600 x 900 60.0 60.0 108.0 +/+
CVT, 1920 x 1080
67.5
60.0
148.5
+/+
CVT, 1920 x 1080 83.89 75.0 174.5 +/-
Electrical specifications
Model S2421HN/S2421NX/S2721HN/S2721NX
Video input signals •Digital video signal for each dierential line
Per dierential line at 100 ohm impedance
•HDMI signal input support
Input voltage/ frequency/
current
100-240 VAC / 50 or 60 Hz ± 3 Hz / 1.5 A
(maximum)
Inrush current 120 V: 30 A (maximum)
240 V: 60 A (maximum)