Table 18. Power adapter specifications(continued)
Description Option one Option two
Input current (maximum)
1.50 A 2.50 A
Output current (continuous)
4.62 A (continuous) 6.70 A (continuous)
Rated output voltage
19.50 VDC 19.50 VDC
Temperature range:
Operating
0°C to 40°C (32°F to 104°F) 0°C to 40°C (32°F to 104°F)
Storage
-40°C to 70°C (-40°F to 158°F) -40°C to 70°C (-40°F to 158°F)
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing
the device outside these ranges may impact the performance of specific components.
Display
The following table lists the display specifications of your Inspiron 27 7720 All-in-One.
Table 19. Display specifications
Description Option one Option two
Display type
27-inch, Full High Definition (FHD) 27-inch, Full High definition (FHD)
Touch options
Touch support with 10 touch points Not supported
Display-panel technology
Wide View Angle (WVA) Wide view Angle (WVA)
Display-panel dimensions (active area):
Height
336.31 mm (13.24 in.) 336.31 mm (13.24 in.)
Width
597.88 mm (23.54 in.) 597.88 mm (23.54 in.)
Diagonal
685.98 mm (27.01 in.) 685.98 mm (27.01 in.)
Display-panel native resolution
1920 x 1080 1920 x 1080
Luminance (typical)
250 nits 300 nits
Megapixels
2.07 M 2.07 M
Color gamut
99% (sRGB) - typical 99% (sRGB) - typical
Pixels Per Inch (PPI)
81 81
Contrast ratio (minimum)
700:1 700:1
Response time (maximum)
28 ms 25 ms
Refresh rate
60 Hz 60 Hz
Horizontal view angle
+/- 80 degrees (min.) +/- 80 degrees (min.)
Vertical view angle
+/- 80 degrees (min.) +/- 80 degrees (min.)
Specifications of Inspiron 27 7720 All-in-One 31
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