HP EliteBook 820 User Manual page 9

6 Power management ..................................................................................................................................... 41
Shutting down the computer .............................................................................................................................. 41
Setting power options ......................................................................................................................................... 41
Using power-saving states ............................................................................................................... 41
Using battery power .......................................................................................................................... 43
Using external AC power ................................................................................................................... 48
Switchable graphics/dual graphics (select models only) ................................................................. 49
7 External cards and devices ........................................................................................................................... 51
Using memory card readers (select models only) .............................................................................................. 51
Inserting a memory card ................................................................................................................... 51
Removing a memory card ................................................................................................................. 51
Using smart cards (select models only) .............................................................................................................. 52
Inserting a smart card ....................................................................................................................... 53
Removing a smart card ..................................................................................................................... 53
Using a USB device ............................................................................................................................................... 53
Connecting a USB device ................................................................................................................... 54
Removing a USB device ..................................................................................................................... 54
Using optional external devices .......................................................................................................................... 54
Intel Rapid Start Technology (select models only) ........................................................ 42
Initiating and exiting Sleep ............................................................................................. 42
Initiating and exiting Hibernation ................................................................................... 42
Using the power meter and power settings ................................................................... 43
Setting password protection on wakeup ....................................................................... 43
Finding additional battery information .......................................................................... 43
Using Battery Check ........................................................................................................ 44
Displaying the remaining battery charge ....................................................................... 44
Maximizing battery discharge time ................................................................................ 44
Managing low battery levels .......................................................................................... 44
Identifying low battery levels ...................................................................... 44
Resolving a low battery level ....................................................................... 45
Inserting or removing the battery .................................................................................. 45
Inserting a battery ........................................................................................ 45
Removing a battery ...................................................................................... 46
Conserving battery power .............................................................................................. 47
Storing a user-replaceable battery (select models only) .............................................. 47
Disposing of a user-replaceable battery (select models only) ...................................... 48
Replacing a user-replaceable battery (select models only) .......................................... 48
Testing an AC adapter ..................................................................................................... 48
Using switchable graphics (select models only) ............................................................ 49
Using dual graphics (select models only) ....................................................................... 50
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