Alienware m5550 user manual AC Adapter, DC-out Connector, AC Plug

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Alienware Area-51 m5550 Technical Reference

AC Adapter

1. DC-out Connector

The DC-out connector docks to the power jack (DC-in) on the computer.

2. Adapter

The adapter converts alternating current into constant DC voltage for the computer.

3. AC Plug

The AC plug plugs into the AC wall outlet.

Warning: Make sure you are using a standard 3-prong AC wall socket with a ground pin. If not, you may feel a slight tingling sensation on any of the computer’s metal parts such as the I/O ports. This is caused by leakage current when the AC adapter is not properly grounded (via the ground pin). However, the amount of leakage current is within the safety regulation and is not harmful to the human body.

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Contents Alienware Area-51 m5550 Technical Reference Table of Contents Bios Setup and Security Upgrading Your Computer Preface Using This ManualSymbols and Conventions Here are some ways of taking care of your AC adapter Cleaning the Ventilation Grills When cleaning the computer, observe these stepsChapter Summaries Chapter ONE Getting to Know the Basics Performance Features Ethernet Port Firewire IEEE1394 / 1394a and USB2.0 PortsWireless LAN Top View LCD Latch System At a GlanceKeyboard Touch Pad Disable / Enable ButtonLED Status Indicator Power / Suspend ButtonWindows Media Player Quick Key Silent Mode ButtonOutlook Express Quick Key Internet Explorer Quick KeyFront and Rear View Wireless On/Off SwitchPower Jack DC-in Battery PackKensington Lock Key Hole Ventilation GrillMicrophone Jack Audio Volume DialSide Views Stereo Headphone / SPDIF-out JackTV S-Video Port Firewire / IEEE1394 / 1394a PortUSB2.0 Port DVI-I PortExpressCard Slot Hard Disk Drive Cover Battery Pack and Battery LatchBottom View Alienware Area-51 m5550 Technical Reference System Device Cover AC Plug DC-out ConnectorAC Adapter AdapterSystem & Power Status Indicators Function Keys Quick Keys Keyboard FeaturesEmbedded Numeric Keypad Windows KeysStart Key Application Menu KeyTips on Using the Touch Pad Opening and Closing the Display Panel Adjusting the Display BrightnessGraphics Subsystem Extending the Life of the TFT Display DeviceModem Audio SubsystemTo change the modem setting, do the following Chapter TWO Bios Setup and Security Feature Alienware Area-51 m5550 Technical Reference Bios Action Keys Entering the Bios Setup ScreenLeaving the Bios Setup Screen Boot Settings Configuration Modifying the Bios SettingsBoot Setup Main SetupRealtek Boot Agent To boot from. If Realtek Disabled Using Password Protection Security SetupExit Setup Power SetupChapter Three Battery Power & Power Management Very Low Battery Warning Battery PackLithium-Ion Battery Battery Low-Power Warning Low Battery WarningAlienware Area-51 m5550 Technical Reference To Remove the Battery Pack Installing and Removing the Battery PackChecking the Battery Level To Install the Battery PackCharging the Battery and Charging Time Prolonging the Battery’s Life and Usage Cycles Windows’ Power Schemes Using Windows Power OptionsAlienware Area-51 m5550 Technical Reference Hibernate Suspend Suspend ModeStandby Suspend Power Button Action Low Battery Warning Power Menu Quick Access Windows’ Power Plans Alienware Area-51 m5550 Technical Reference Suspend Mode Power Button Action M5550-04-2007-techref.indd 2007 122951 PM Power Menu Quick Access Chapter Four Upgrading Your Computer Upgrading the Hard Disk Drive Alienware Area-51 m5550 Technical Reference Alienware Area-51 m5550 Technical Reference Upgrading the System Memory Installing a memory module Dimm into the system Alienware Area-51 m5550 Technical Reference Adding a Mini-PCI Type Wireless LAN Card Optional Device Installing a Mini PCI Card into the System Replace the System Device Cover and 9 Screw D’s Chapter Five Troubleshooting Alienware Area-51 m5550 Technical Reference Sound cannot be recorded Audio ProblemsNo speaker output Hard disk drive has reached its capacity Hard Disk ProblemsHard disk drive does not work or is not recognizable Hard drive is making abnormal whining noisesFiles are corrupted Hard disk takes longer to read a fileDisk cannot be ejected Optical Drive ProblemsOptical drive does not work Drive does not read any disksScreen flickers Display ProblemsDisplay panel is blank when the system is turned on Screen is difficult to readBuilt-in keyboard accepts no input Keyboard and Mouse ProblemsCharacters on the screen repeat when I type Built-in touch pad performs erraticallyMemory Problems Cmos Battery ProblemConnection difficulties Modem Problems Built-in modem does not respondEthernet adapter does not work Network Adapter / Ethernet ProblemsPC card cannot be recognized PC Card / Pcmcia ProblemsWindows crashes or freezes when you remove the PC card PC Cards do not functionProgram appears to have stopped or runs very slowly Performance ProblemsComputer becomes hot IEEE1394 port does not work Firewire IEEE1394 and USB2.0 ProblemsUSB device does not work Appendix a Product Specifications Audio Processor and Core LogicSystem Memory DisplayStorage Firewire IEEE1394aModem LAN / EthernetExpress Card New Card & Multiple Card Reader Ports and ConnectorsBattery Pack / AC Adapter Keyboard & Touch padPhysical Specification BiosAppendix B Agency Regulatory Notices Declaration of Conformity Federal Communications Commission NoticeModifications Connections to Peripheral DevicesCanadian Notice European NoticeJapan Power Cord RequirementCanada Other Countries Telephone Lines Requirement Battery Pack SafetyLithium Battery Warning / Bridge Battery Warning Laser SafetyCabling Restriction for Networks Connecting to the NetworkEthernet