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13.Slide the new SODIMM (1) into the socket at approximately a 30° angle, and then press the
SODIMM into the socket (2) so that the latches lock it in place.
NOTE:A memory module can be installed in only one way. Match the notch on the module with
the tab on the memory socket.
14.Hold the memory compartment cover with the fiber NIC slot toward the front of the computer, and
then set the memory compartment cover (1) over the SODIMMs.
15.If a fiber NIC is installed, move the cable carefully into the slot in the memory compartment cover.
16.Line up the screw holes in the memory cover with the screw posts in the chassis, and then fasten
the two screws (2) with the springs to secure the memory compartment cover.
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17.If the computer is an HP t620 PLUS Thin Client, rotate the fan assembly down, push the fan
assembly latch (1) toward the front of the computer, lower the assembly (2) until it stops, and then
release the latch.
18.Replace and latch the access panel, and then reinstall the I/O panel.
19.Replace the computer stand.
20.Reconnect the power cord and turn on the computer.
21.Lock any security devices that were disengaged when the computer cover or access panel was
The computer automatically recognizes the additional memory when you turn on the computer.
Installing additional memory
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Installing a PCI-Express card
You may install an optional half-height PCI-Express (PCIe) card in the HP t620 PLUS Thin Client. A riser
card is installed in this computer by default.
WARNING!To reduce the risk of personal injury or equipment damage from electric shock, hot
surfaces, or fire, disconnect the power cord from the power outlet and allow the internal system
components to cool before you touch them.
To install a PCIe card:
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as USB flash drives, from the computer.
3.Turn off the computer properly through the operating system, and then turn off any external
4.Disconnect the power cord from the power outlet, and disconnect any external devices.
CAUTION:Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
5.Remove the computer from the stand and lay the computer down with the right side up.
6.Remove the computer access panel and back I/O panel. See
Removing and replacing the access
panel on page 8.
7.Push the fan assembly latch (1) toward the front of the computer and rotate the assembly (2) up
and out of the way.
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8.Locate the slot in the riser card.
9.Slide the expansion slot cover left and remove it.
Installing a PCI-Express card
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10.Align the PCIe card connectors with the slot in the riser card and the metal tab at the end of the
card with the slot in the chassis. Press the PCIe card firmly into the slot in the riser card until it is
securely seated and the tab is in the slot.
11.Rotate the fan assembly down, push the fan assembly latch (1) toward the front of the computer,
lower the assembly (2) until it stops, and then release the latch.
12.Replace and latch the access panel, and then reinstall the I/O panel.
13.Replace the computer stand.
14.Reconnect the power cord and turn on the computer.
15.Lock any security devices that were disengaged when the computer cover or access panel was
22 Chapter 2 Hardware changes