Maintenance and Service Guide

Memory modules
The computer comes with at least one preinstalled double data rate 4 synchronous dynamic random access
memory (DDR4-SDRAM) small outline dual in-line memory module (SODIMM). There are two memory sockets
on the system board that can be populated with up to 32 GB of memory.
DDR4-SDRAM SODIMMs
For proper system operation, the memory modules must be 1.2 volt DDR4-SDRAM SODIMMs and adhere to
the following specications:
●
Industry-standard 260-pin
●
Unbuered non-ECC PC4-19200 DDR4-2400 MHz-compliant
●
Support CAS latency DDR4 2400 MHz (17-17-17 timing)
●
Contain the mandatory Joint Electronic Device Engineering Council (JEDEC) specication
The computer supports the following:
●
512-Mbit, 1-Gbit, 2-Gbit, 4-Gbit, and 8-Gbit non-ECC memory technologies
●
Single-sided and double-sided SODIMMs
●
The following SODIMMs are oered:
–
4 GB (1 x 4 GB) DDR 42400 SODIMM memory
–
8 GB (1 x 8 GB) DDR 42400 SODIMM memory
–
8 GB (2 x 4 GB) DDR 42400 SODIMM memory
–
16 GB (1 x 16 GB) DDR 42400 SODIMM memory
–
16 GB (2 x 8 GB) DDR 42400 SODIMM memory
–
32 GB (2 x 16 GB) DDR 42400 SODIMM memory
NOTE: The system will not operate properly if you install unsupported SODIMMs.
Removing a SODIMM
CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before replacing the memory module. Regardless of the power-on state, voltage is always supplied to the
memory module as long as the computer is plugged into an active AC outlet. Adding or removing the memory
module while voltage is present may cause irreparable damage to the memory module 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 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, refer to
Electrostatic discharge information on page 16.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
To remove and install a memory module:
Memory modules 45