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About Your Monitor
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11
Label Description
Use
1
VESA mounting holes (100 mm)
Supports optional mounting of the monitor
using a VESA mount or arm.
2
Security lock slot
Secures monitor with security lock
(security lock not included).
3
Regulatory rating label with
Barcode serial number
Lists the regulatory approvals. Refer to
this label if you need to contact Dell for
technical support.
Bottom View
1
2
3
Label Description
Use
1
AC power connector
To connect the monitor power cable.
2
HDMI connector
To connect your computer to the monitor using a HDMI
cable.
3
DP connector
To connect your computer to the monitor using a DP
cable.
Monitor Specifications
Flat-Panel Specifications
Model number
D2421H
D2721H
Screen type
Active matrix - TFT LCD
Active matrix - TFT LCD
Panel type
In-Plane Switching
Technology
In-Plane Switching
Technology
Viewable image
Diagonal
Horizontal Active Area
Vertical Active Area
Area
604.7 mm (23.8 in.)
527.04 mm (20.76 in.)
296.46 mm (11.67 in.)
156246.27 mm² (242.27 in.²)
686.0 mm (27 in.)
597.89 mm (23.54 in.)
336.31 mm (13.24 in.)
201076.91 mm² (311.67 in.²)
Pixel pitch
0.2745 x 0.2745 mm
0.3114 x 0.3114 mm