HP ProDesk 400 G4 Desktop Mini PC Instrukcja Użytkownika Pobierz pdf (Strona 22)

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

briey touching a grounded metal

object. For more information, see Electrostatic discharge on page 36.

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 ash drive, from the computer.

3. Turn o the computer properly through the operating system, and then turn o any external devices.

4. Disconnect the power cord from the AC outlet and disconnect any external devices.

5. Remove the access panel.

● For instructions on removing the access panel from a 35W model, see Removing the access panel

of the HP EliteDesk 800 35W on page 11.

● For instructions on removing the access panel from any other model, see Removing the access

panel on page 10.

For instructions, see Removing the access panel on page 10.

WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system components

to cool before you touch them.

16 Chapter 3 Hardware upgrades

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 46 47

Brak uwag

HP ProDesk 400 G4 Desktop Mini PC Instrukcja Użytkownika Strona 22