HP EliteDesk 800 35W G3 Hardware Reference Guide - Page 23

Installing a memory module, CAUTION

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Installing a memory module CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present may cause irreparable damage to the memory modules or system board. The memory module slots have gold-plated metal contacts. When upgrading the memory, it is important to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. For more information, see Electrostatic discharge on page 44. When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as a USB flash drive, from the computer. 3. Turn off the computer properly through the operating system, and then turn off any external devices. 4. Disconnect the power cord from the AC outlet and disconnect any external devices. 5. Remove the computer access panel. For instructions, see Removing the computer access panel on page 12. 6. Tilt the fan up using the front tab and leave it in the up position. NOTE: It is not necessary to fully remove the fan to remove or install a memory module. Upgrading system memory 17

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Installing a memory module
CAUTION:
You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to
the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing
memory modules while voltage is present may cause irreparable damage to the memory modules or system
board.
The memory module slots have gold-plated metal contacts. When upgrading the memory, it is important to
use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from
having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before beginning
these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal
object. For more information, see
Electrostatic discharge
on page
44
.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
1.
Remove/disengage any security devices that prohibit opening the computer.
2.
Remove all removable media, such as a USB flash drive, from the computer.
3.
Turn off the computer properly through the operating system, and then turn off any external devices.
4.
Disconnect the power cord from the AC outlet and disconnect any external devices.
5.
Remove the computer access panel.
For instructions, see
Removing the computer access panel
on page
12
.
6.
Tilt the fan up using the front tab and leave it in the up position.
NOTE:
It is not necessary to fully remove the fan to remove or install a memory module.
Upgrading system memory
17