HP Pavilion 15 Sleekbook Maintenance And Service Manual page 20

Component
Internal microphone
(4)
[Author note:] Does this platform have proximity sensors or IR emitters?.
*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around
the antennas free from obstructions. For wireless regulatory notices, see the section of the Regulatory, Safety and Environmental
Notices that applies to your country or region.
12 Chapter 2 External component identification
Description
Records sound.