Upgrading System Memory; Installing A Memory Module - HP Thin Client T740 Hardware Reference Manual

Upgrading system memory

The memory socket on the system board is populated with one memory module. To achieve the maximum
memory support, you can populate each memory socket with up to 16 GB of memory each (32 GB total).
For proper system operation, the memory module must adhere to the following specifications:
Industry-standard 260-pin Small Outline DIMM (SODIMM)
●
Unbuffered non-ECC PC4-17000 DDR4-1866 MHz
●
1.2 volt DDR4-SDRAM memory module
●
The thin client supports the following:
Single-Rank and Dual-Rank modules
●
Single-sided and double-sided memory modules
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Strongly recommend using the identical memory (same vendor, die revision and capacity) when using
●
both SODIMM slots
Higher-speed DDR4 SODIMM modules will actually operate at a maximum system memory speed of 1866
MHz.
NOTE: The system does not operate properly when a nonsupported memory module is installed.

Installing a memory module

CAUTION: You must unplug 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 thin client 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 socket has gold-plated metal contacts. When upgrading the memory, it is important to
use a memory module 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 thin client or optional cards. Before beginning
the following procedures, be sure that you are discharged of static electricity by briefly touching a grounded
metal object. For more information, refer to
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 thin client.
2. Remove all removable media, such as USB flash drives, from the thin client.
3. Turn off the thin client properly through the operating system, and then turn off any external devices.
4. Unplug the power cord from the AC outlet, and disconnect any external devices.
CAUTION:
before adding or removing a memory module. Regardless of the power-on state, voltage is always
supplied to the memory module as long as the thin client is plugged into an active AC outlet. Adding or
removing a memory module while voltage is present may cause irreparable damage to the memory
module or system board.
5. Remove the stand from the thin client.
You must unplug the power cord and wait approximately 30 seconds for the power to drain
Electrostatic discharge on page 27.
Upgrading system memory 25