HP EliteBook 2740p Base Model Tablet PC User Manual Page 88
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- Table of contents
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3. Plug the other end of the power cord into an AC outlet (3).
Using battery power
When a charged battery is in the computer and the computer is not plugged into external power, the
computer runs on battery power. When the computer is plugged into external AC power, the
computer runs on AC power.
If the computer contains a charged battery and is running on external AC power supplied through the
AC adapter, the computer switches to battery power if the AC adapter is disconnected from the
computer.
NOTE: The display brightness is decreased to save battery life when you disconnect AC power. To
increase display brightness, use the fn+f10 hotkey or reconnect the AC adapter.
You can keep a battery in the computer or in storage, depending on how you work. Keeping the
battery in the computer whenever the computer is plugged into AC power charges the battery and
also protects your work in case of a power outage. However, a battery in the computer slowly
discharges when the computer is off and unplugged from external power.
WARNING! To reduce potential safety issues, use only the battery provided with the computer, a
replacement battery provided by HP, or a compatible battery purchased from HP.
Computer battery life varies, depending on power management settings, programs running on the
computer, display brightness, external devices connected to the computer, and other factors.
Finding battery information in Help and Support
To locate battery information for your computer, select Start > Help and Support > Learn More
About Your PC.
Using Battery Check
Battery Check provides information on the status of the battery installed in the computer.
76 Chapter 6 Power management
- HP EliteBook 2740p User Guide 1
- Safety warning notice 3
- Table of contents 5
- 1Features 13
- 2 Chapter 1 Features 14
- Identifying hardware 3 15
- Buttons and switches 16
- Identifying hardware 5 17
- Front components 18
- Right-side components 19
- Left-side components 20
- Rear components 21
- Bottom components 22
- Identifying hardware 11 23
- 12 Chapter 1 Features 24
- Identifying the labels 25
- 2 Using the tablet 27
- Rotating the display 28
- Notebook mode 30
- Rotating the display 19 31
- 3Networking 32
- Using the wireless controls 33
- Using the wireless button 33
- Using a WLAN 35
- Connecting to a WLAN 37
- Roaming to another network 37
- Inserting a SIM 38
- Removing a SIM 39
- 8. Replace the battery 40
- 28 Chapter 3 Networking 40
- Network icon is not displayed 43
- WLAN connection is very weak 44
- Connecting a modem cable 45
- Selecting a location setting 46
- Using pointing devices 51
- Using the pointing stick 54
- Connecting an external mouse 54
- Using the pen 55
- Pressure sensitivity 56
- Calibrating the pen 57
- Using the pen holder 57
- Setting pen preferences 58
- Tapping (or clicking) 58
- Flicking 58
- Dragging 59
- Scrolling 59
- Rotating 60
- Pinching 61
- Using touch screen settings 62
- Using the keyboard 63
- Using hotkeys 65
- Initiating Standby 67
- Using HP Quick Launch Buttons 69
- Using HP QuickLook 71
- Using HP QuickWeb 72
- 5 Multimedia 73
- Multimedia software 74
- Checking your audio functions 76
- Webcam tips 79
- Adjusting webcam properties 79
- 6 Power management 83
- Using the Power Meter 84
- Using power schemes 85
- Customizing power schemes 86
- Using external AC power 87
- Using battery power 88
- Charging a battery 90
- Managing low battery levels 91
- Calibrating a battery 92
- Step 3: Discharge the battery 93
- Conserving battery power 94
- Storing a battery 94
- Disposing of a used battery 95
- Replacing the battery 95
- Testing an AC adapter 96
- Shutting down the computer 96
- Identifying installed drives 98
- Handling drives 98
- Using Disk Defragmenter 100
- Using Disk Cleanup 100
- Using HP 3D DriveGuard 101
- 8. Replace the batteries 106
- 10. Turn on the computer 106
- 94 Chapter 7 Drives 106
- 8 External devices 107
- Using USB legacy support 108
- Using a 1394 device 109
- 4. Remove the device 110
- Using external drives 111
- Using the docking connector 112
- 9 External media cards 113
- Configuring an ExpressCard 115
- Inserting an ExpressCard 115
- Inserting a smart card 117
- Removing a smart card 118
- 10 Memory modules 119
- 16. Turn on the computer 122
- 11 Security 124
- Using passwords 125
- BIOS administrator password 126
- Setting a DriveLock password 129
- Entering a DriveLock password 129
- Changing a DriveLock password 129
- Removing DriveLock protection 131
- Securing system devices 133
- Using antivirus software 135
- Using firewall software 136
- Installing critical updates 137
- 126 Chapter 11 Security 138
- Installing a security cable 139
- 12 Software updates 140
- Updating the BIOS 142
- Downloading a BIOS update 143
- The BIOS installation begins 144
- Updating programs and drivers 145
- 13 Backup and recovery 146
- Backing up your information 147
- Performing a recovery 148
- 14 Computer Setup 149
- Computer Setup menus 150
- File menu 151
- Security menu 151
- System Configuration menu 152
- Computer Setup menus 141 153
- Computer Setup menus 143 155
- 15 MultiBoot 157
- 16 Management and printing 163
- Enabling the iAMT solution 168
- Change Intel ME Password 169
- 17 Cleaning guidelines 171
- Cleaning procedures 172
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