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HP 280 G4 User Manual

HP 280 G4
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1. Shut down the operating system properly, then turn o the computer and any external devices, and
disconnect the power cord from the power outlet.
2. With the power cord disconnected, press the power button again to drain the system of any residual
power.
WARNING! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to
disconnect the power cord from the wall outlet, and allow the internal system components to cool
before touching.
IMPORTANT: When the computer is plugged in, the power supply always has voltage applied to the
system board even when the unit is turned o. Failure to disconnect the power cord can result in
damage to the system.
Static electricity can damage the electronic components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of static electricity by briey touching a
grounded metal object. See the Safety & Regulatory Information guide for more information.
3. Remove the access panel.
4. Locate the header and jumper labeled CMOS/PSWD.
NOTE: The password jumper is blue so that it can be easily identied. For assistance locating the
password jumper and other system board components, see the system board components image at
System board callouts on page 38.
5. Remove the jumper from pins 1 and 2.
6. Place the jumper on either pin 1 or 2, but not both, so that it does not get lost.
7. Replace the access panel and reconnect the external equipment.
8. Plug in the computer and turn on power. Allow the operating system to start. This clears the current
passwords and disables the password features.
9. Shut down the computer, unplug the power, and disconnect the external equipment.
10. Remove the access panel.
11. Place the jumper on pins 1 and 2.
12. Replace the access panel.
13. Reconnect the external equipment and plug in the computer.
Changing a Setup or Power-On password
To change the power-on or setup password, complete the following steps:
1. Turn on or restart the computer.
To change the Setup password, go to step 2.
To change the Power-on password, go to step 3.
2. To change the Setup password, as soon as the computer turns on:
- Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.
- Press the F10 key to enter Computer Setup.
Changing a Setup or Power-On password 83

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HP 280 G4 Specifications

General IconGeneral
GraphicsIntel UHD Graphics 630
Optical DriveDVD-Writer
RAMDDR4-2666
Storage1TB 7200 rpm SATA
Operating SystemFreeDOS
AudioRealtek ALC3601
Expansion Slots1 PCIe x16; 1 PCIe x1; 1 M.2
Front Ports2 USB 3.1 Gen 1; 1 headphone/microphone combo
Rear Ports1 HDMI; 1 RJ-45; 1 VGA; 2 USB 2.0; 2 USB 3.1 Gen 1
Ports1 VGA; 1 HDMI
Power Supply310 W internal power supply, up to 90% efficiency, active PFC

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