HP Elitebook 840 G2 P0c57ut Aba 14 Notebook User Manual

To test the AC adapter:NOTE:The following instructions apply to computers with user-replaceable batteries.
1.Shut down the computer.
2.Remove the battery on the computer.
3.Connect the AC adapter to the computer, and then plug it into an AC outlet.
4.Turn on the computer.
●If the power lights turn on, the AC adapter is working properly.
●If the power lights remain off, the AC adapter is not functioning and should be replaced.
Contact support for information on obtaining a replacement AC power adapter....

NOTE:For more information, see the switchable graphics software Help.
Using dual graphics (select models only)
If your system is equipped with dual graphics (two or more added Graphics Processing Units (GPUs)), you can 
enable AMD Radeon Dual Graphics to increase application power and performance for full-screen 
applications that use DirectX version 10 or 11. For more information about DirectX, go to 
http://www.microsoft.com/directx.
NOTE:Dual graphics systems only support automatic selection based on...

7External cards and devices
Using memory card readers (select models only)
Optional memory cards provide secure data storage and convenient data sharing. These cards are often used with digital media–equipped cameras and PDAs as well as with other computers.
Inserting a memory card
CAUTION:To reduce the risk of damage to the memory card connectors, use minimal force to insert a 
memory card.
1.Hold the card label-side up, with the connectors facing the computer.
2.Insert the card into the memory card...

3.Pull gently on the card to remove it from the slot.NOTE:If the card does not eject, pull the card out of the slot. 
Using smart cards (select models only)
NOTE:The term smart card is used throughout this chapter to mean both smart cards and Java™ Cards.
A smart card is a credit card-sized accessory that carries a microchip containing memory and a 
microprocessor. Like personal computers, smart cards have an operating system to manage input and 
output, and they include security features to protect...

Inserting a smart card
1.Hold the card label-side up, and gently slide the card into the smart card reader until the card is seated.
2.Follow the on-screen instructions for logging on to the computer using the smart card PIN.
Removing a smart card
▲Grasp the edge of the smart card, and then pull it out of the smart card reader.
Using a USB device
Universal Serial Bus (USB) is a hardware interface that can be used to connect an optional external device, 
such as a USB keyboard, mouse, drive, printer,...

Connecting a USB deviceCAUTION:To reduce the risk of damage to a USB connector, use minimal force to connect the device.
▲Connect the USB cable for the device to the USB port.
NOTE:The following illustration may look slightly different than your computer.
You will hear a sound when the device has been detected.
NOTE:The first time you connect a USB device, a message in the notification area lets you know that the 
device is recognized by the computer.
Removing a USB device
CAUTION:To reduce the risk of...

1.Connect the device to the computer.
2.If you are connecting a powered device, plug the device power cord into a grounded AC outlet.
3.Turn on the device.
To disconnect an unpowered external device, turn off the device, and then disconnect it from the computer. 
To disconnect a powered external device, turn off the device, disconnect it from the computer, and then 
unplug the AC power cord.
Using optional external drives
Removable external drives expand your options for storing and accessing...

8Drives
Handling drives
CAUTION:Drives are fragile computer components that must be handled with care. Refer to the following 
cautions before handling drives. Do not drop a drive, place items on it, or expose it to liquids, or temperature 
or humidity extremes.
Observe these precautions when handling drives:
●Before removing or installing a drive, shut down the computer. If you are unsure whether the computer 
is off, in the Sleep state, or in Hibernation, turn the computer on, and then shut it down....

1.Select Start > All Programs > Intel > Intel Rapid Storage Technology.
2.Click the Acceleration link, and then click the Disable Acceleration link.
3.Wait for the Acceleration Mode to complete.
4.Click the Reset to Available link.
IMPORTANT:You must temporarily disable SRT when changing RAID modes. Make the change and then re-
enable SRT. Failure to temporarily disable this feature will prevent you from creating or changing RAID 
volumes.NOTE:HP does not support SRT with self-encrypting drives (SEDs)....

3.Slide the service door toward the front of the computer (4) and lift (5) to remove the service door.
Replacing the service door
Replace the service door after accessing the memory module slot, hard drive, regulatory label, and other components.
1.Tilt down the service door to align the front edge of the service door near the front edge of the 
computer 
(1).
2.Insert the alignment tabs (2) on the rear edge of the service door with the notches on the computer.
3.Slide the service door toward the battery...