Keys with alternate characters
There are other keys on your keyboard with alternate characters. The symbols that are shown at the bottom of these keys
a
re the main characters that are displayed when the key is pressed; the symbols that are shown at the top of these keys are
displayed when the key is pressed with the shift key. For example, if you press 2, 2 is displayed; if you press Shift and 2, @ is
displayed.
Camera
The following table lists the camera specifications of your Precision 3490.
Table 17. Camera specifications
Description Values
Number of cameras
One
Camera type
● FHD RGB HDR camera
● FHD RGB+IR HDR camera
● FHD RGB+IR HDR camera with Ambient Light Sensor,
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Camera location
Front camera
Camera sensor type
CMOS sensor technology
Camera resolution:
Still image
2.07 megapixel
Video
1920 x 1080 (FHD) at 30 fps
Infrared camera resolution:
Still image
0.23 megapixels
Video
640 x 360 at 30 fps
Diagonal viewing angle:
Camera
80 degrees
Infrared camera
86.60 degrees
Touchpad
The following table lists the touchpad specifications of your Precision 3490.
Table 18. Touchpad specifications
Description Values
Touchpad resolution:
> 300 DPI
Touchpad dimensions:
Horizontal
115 mm (4.52 in.)
Vertical
67 mm (2.64 in.)
20 Specifications of Precision 3490