Table 16. Secondary behavior(continued)
Function key Secondary behavior
Fn + Shift + B Calls unobtrusive mode
NOTE: 
The key sequence will call unobtrusive mode. The hotkey 
sequence will be disabled by default to prevent accidental 
actuation. You may enable through BIOS setup option.
Camera
The following table lists the camera specifications of your Latitude 3550.
Table 17. Camera specifications
Description Values
Number of cameras
Two
Camera type
● HD RGB
● FHD RGB
● FHD RGB + IR
Camera location
Front camera
Camera sensor type
CMOS sensor technology
Camera resolution:
Still image
● 0.92 megapixels (HD)
● 2.07 megapixels (FHD)
Video
● 1280 x 720 (HD) at 30 fps
● 1920 x 1080 (FHD) at 30 fps
Infrared camera resolution:
Still image
0.23 megapixel
Video
640 x 360 at 15 fps
Diagonal viewing angle:
Camera
● 78.60 degrees (HD)
● 80.20 degrees (FHD)
Infrared camera
86.60 degrees
Touchpad
The following table lists the touchpad specifications of your Latitude 3550.
Table 18. 
Touchpad specifications
Description Values
Touchpad resolution:
>300 dpi
Touchpad dimensions:
22 Specifications of Latitude 3550