User's Manual

Fingerprint reader
The following table lists the fingerprint-reader specifications of your Precision 7550.
Table 20. Fingerprint reader on power button specifications
Description Values
Fingerprint-reader sensor technology
Capacitive
Fingerprint-reader sensor resolution
500 / 363 ppi
Fingerprint-reader sensor pixel size
• X: 108 / 76
• Y: 88 / 100
Fingerprint-reader sensor
• Horizontal: 8.40 mm x 6.90 mm
• Vertical: 8.40 mm x 5.25 mm
Table 21. Fingerprint reader on palmrest specifications
Description Values
Fingerprint-reader sensor technology Capacitive
Fingerprint-reader sensor resolution 508 dpi
Fingerprint-reader sensor pixel size 360
Display
The following table lists the display specifications of your Precision 7550.
Table 22. Display specifications
Description Option one Option two Option three Option four Option five
Display type
15.6 in. Full High
Definition (FHD)
15.6 in. Full High
Definition (FHD)
15.6 in. Full High
Definition (FHD)
15.6 in. Ultra High
Definition (UHD)
15.6 in. Ultra High
Definition (UHD)
Display-panel
technology
WVA (Wide view
angle )
WVA (Wide view
angle )
WVA (Wide view
angle )
HDR400
HDR600
Display-panel
dimensions (active
area):
Height
193.59 mm (7.62 in.) 193.59 mm (7.62 in.) 193.59 mm (7.62 in.) 193.59 mm (7.62
in.)
193.59 mm (7.62
in.)
Width
344.16 mm (13.55 in.) 344.16 mm (13.55 in.) 344.16 mm (13.55 in.) 344.16 mm (13.55
in.)
344.16 mm (13.55
in.)
Diagonal
394.87 mm (15.60 in.) 394.87 mm (15.60 in.) 394.87 mm (15.60
in.)
394.87 mm (15.55
in.)
394.87 mm (15.55
in.)
Display-panel native
resolution
1920 x 1080 1920 x 1080 1920 x 1080 3840 x 2160
3840 x 2160
Luminance (typical)
220 nits 500 nits 500 nits 500 nits
600 nits
Megapixels
2.07 2.07 2.07 8.29
8.29
Color gamut
45% NTSC 100% DCIP3 100% DCIP3 100% Adobe
100% Adobe
24 Technical specifications