HP ZBook 15 Mobile Workstation - Manual (Page 23)

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Component Description
(1) Battery release latch Releases the battery.
(2) Battery bay Holds the battery.
(3) SIM slot Supports a wireless subscriber identity module (SIM)
(select models only). The SIM slot is located inside the
battery bay.
(4) Docking connector Connects an optional docking device.
(5) Accessory battery connector Connects an optional accessory battery.
(6) Service cover release lock Locks the service cover.
(7) Service cover release latch Releases the service cover on the computer.
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