Bottom - Dell P91F Setup And Specifications

2. Ambient-light sensor
The sensor detects the ambient light and automatically adjusts the keyboard backlight and display brightness.
3. RGB-infrared camera
This combined camera supports both infrared Windows Hello facial recognition and standard RGB imaging for photos and
videos.
4. Camera-status light
Turns on when the camera is in use.
5. Infrared emitter
Emits infrared light, which enables the infrared camera to sense and track motion.
6. Battery-status light
Indicates the battery-charge status.
Solid white—Power adapter is connected and the battery has more than 5% charge.
Amber—Computer is running on battery and the battery has less than 5% charge.
Off—Power adapter is disconnected or the battery is fully charged.

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1. Service Tag label
The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware
components in your computer and access warranty information.
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