HP EliteBook 840 G3 - Manual (Page 15)

Component Description
(4) Audio-out (headphone)/Audio-in (microphone)
combo jack
Connects optional powered stereo speakers, headphones,
earbuds, a headset, or a television audio cable. Also connects an
optional headset microphone. This jack does not support
optional microphone-only devices.
WARNING! To reduce the risk of personal injury, adjust the
volume before putting on headphones, earbuds, or a headset.
For additional safety information, refer to the Regulatory,
Safety, and Environmental Notices.
To access this guide:
1. Type support in the taskbar search box, and then select
the HP Support Assistant app.
‒ or –
Click the question mark icon in the taskbar.
2. Select My PC, select the Specifications tab, and then
select User Guides.
NOTE: When a device is connected to the jack, the computer
speakers are disabled.
(5) USB 3.0 port Connects an optional USB device, such as a keyboard, mouse,
external drive, printer, scanner or USB hub.
(6) RJ-45 (network) jack/status lights Connects a network cable.
● Green (left): The network is connected.
● Amber (right): Activity is occurring on the network.
(7) Docking connector Connects an optional docking device.
(8) SIM card slot Supports a wireless subscriber identity module (SIM) card.
(9) Power connector Connects an AC adapter.
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