Dell Inspiron 4150 - Manual (Page 66)

AC Adapter Connector — Attach the AC adapter to the computer.
The AC adapter converts AC power to the DC power required by the computer. You can connect the AC adapter with your computer turned either on or off.
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Fan — The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
Device Latch Releases — Press a latch release to remove a device in the module or battery bay.
Memory Module Cover — Protects the memory module(s), the optional Mini PCI card, and the optional modem (see " Memory Modules, Mini PCI Card, and
Modem ").
Docking Device Latch — Latches onto the docking device.
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CAUTION: The AC adapter works with electrical outlets worldwide. However, power connectors and power strips vary among countries. Using an
incompatible cable or improperly connecting the cable to the power strip or electrical outlet may cause fire or equipment damage.
NOTICE: When you disconnect the AC adapter from the computer, grasp the adapter cable connector, not the cable itself, and pull firmly but gently to
avoid damaging the cable.