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Monitor specifications
Model
E2221HN
E2421HN
Screen type
Active matrix-TFT LCD
Active matrix-TFT LCD
Panel type
TN
In-Plane Switching
Viewable area
Diagonal
546.86 mm (21.5 in.)
604.70 mm (23.8 in.)
Active area
Horizontal
Vertical
Area
476.64 mm (18.77 in.)
268.11 mm (10.56 in.)
1277.92 cm² (198.21 in.²)
527.04 mm (20.75 in.)
296.46 mm (11.67 in.)
1562.46 cm² (242.15in.²)
Pixel pitch
0.2482 mm x 0.2482 mm
0.2745 mm x 0.2745 mm
Pixel per inch (PPI)
102
92
Viewing angle
Horizontal
Vertical
170° (typical)
160° (typical)
178° (typical)
178° (typical)
Brightness
250 cd/m² (typical)
250 cd/m² (typical)
Contrast ratio
1,000 to 1 (typical)
1,000 to 1 (typical)
Faceplate coating
Anti-glare with 3H hardness Anti-glare with 3H hardness
Backlight
LED light bar system
LED light bar system
Response time
Normal mode
Fast mode
5 ms
-
8 ms
5 ms
Color depth
16.7 million colors
16.7 million colors
Color gamut
72% (CIE1931)/83% (CIE1976) 72% (CIE1931)/83% (CIE1976)
Dell display manager
compatibility
Yes
Yes
Connectivity
1 x HDMI 1.4, 1 x VGA
1 x HDMI 1.4, 1 x VGA
Bezel width (edge of
monitor to active area)
17.8 mm (Top)
17.8 mm (Left/Right)
17.8 mm (Bottom)
11.8 mm (Top)
11.8 mm (Left/Right)
18.2 mm (Bottom)
Security
Security-lock slot for cable
lock (optional purchase)
Security-lock slot for cable
lock (optional purchase)
Tilt angle
-5° to 21°
-5° to 21°