Dell XPS 2720 Owner's Manual

Contents

Before You Begin | 11Before You BeginTurn Off Your Computer and Connected DevicesCAUTION: To avoid losing data, save and close all open files and exit all openprograms before you turn off your computer.1 Save and close all open files and exit all open programs.2 Move your mouse pointer to the upper/lower-right corner of the screen to openthe Charms sidebar, and then click Settings→ Power→ Shut down.NOTE: If you are using a different operating system, see the documentationof your operating system for shut-down instructions.3 Disconnect your computer and all attached devices from their electrical outlets.4 Disconnect all telephone cables, network cables, and attached devices fromyour computer.5 Press and hold the power button for 5 seconds after the computer is unplugged toground the system board.Safety InstructionsUse the following safety guidelines to protect your computer from potential damage andensure your personal safety.WARNING: Before working inside your computer, read the safety informationthat shipped with your computer. For additional safety best practicesinformation, see the Regulatory Compliance Homepage atdell.com/regulatory_compliance.WARNING: Disconnect all power sources before opening the computer cover orpanels. After you finish working inside the computer, replace all covers, panels,and screws before connecting to the power source.CAUTION: To avoid damaging the computer, ensure that the work surface is flatand clean.CAUTION: To avoid damaging the components and cards, handle them by theiredges and avoid touching pins and contacts.CAUTION: Only a certified service technician is authorized to remove thecomputer cover and access any of the components inside the computer.See the safety instructions for complete information about safety precautions,working inside your computer, and protecting against electrostatic discharge.CAUTION: Before touching anything inside your computer, ground yourself bytouching an unpainted metal surface, such as the metal at the back of thecomputer. While you work, periodically touch an unpainted metal surface todissipate static electricity, which could harm internal components.