HP Engage One Retail System 143, Справочник по аппаратуре

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Installing memory
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 specifications:
●
Industry-standard 260-pin
●
Unbuffered 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) specification
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 offered:
–
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 and installing a memory module
1. Turn off the computer properly through the operating system, and turn off any external devices.
2. Disconnect the power cord from the computer.
IMPORTANT: 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 a memory module while voltage is present may cause irreparable damage to the memory
module or system board.
3. Remove the computer head unit from the stand. See Removing the Engage One head unit from the stand
on page 24 .
4. Remove the display panel from the computer head unit. See Removing the display panel on page 31 .
Installing memory 37