Dell PowerEdge R640 EMC PowerEdge R640 Installation and Service Manual - Page 100

Installing a memory module

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2. If you are removing the memory module permanently, install a memory module blank. The procedure to install a memory module blank is similar to that of the memory module. Installing a memory module The procedure for installing a DIMM module, an NVDIMM-N module, and a DCPMM are identical. Prerequisites Follow the safety guidelines listed in Safety instructions on page 71. CAUTION: Ensure that you install the NVDIMM-N battery if you are using NVDIMM-N. CAUTION: To prevent data loss and potential damage to your system, ensure that your system, LEDs on system, LEDs on NVDIMM-N and LEDs on NVDIMM-N battery are turned off before installing the NVDIMM-N battery. CAUTION: To ensure proper system cooling, memory module blanks must be installed in any memory socket that is not occupied. Remove memory module blanks only if you intend to install memory modules in those sockets. Steps 1. Locate the appropriate memory module socket. CAUTION: Handle each memory module only by the card edges, ensuring not to touch the middle of the memory module or metallic contacts. CAUTION: To prevent damage to the memory module or the memory module socket during installation, do not bend or flex the memory module. You must insert both ends of the memory module simultaneously. 2. Open the ejectors on the memory module socket outward to allow the memory module to be inserted into the socket. 3. Align the edge connector of the memory module with the alignment key of the memory module socket, and insert the memory module in the socket. CAUTION: Do not apply pressure at the center of the memory module; apply pressure at both ends of the memory module evenly. NOTE: The memory module socket has an alignment key that enables you to install the memory module in the socket in only one orientation. 4. Press the memory module with your thumbs until the socket levers firmly click into place. Figure 41. Installing a memory module NOTE: NVDIMM-N memory slots are not hot-pluggable. 100 Installing and removing system components

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2.
If you are removing the memory module permanently, install a memory module blank. The procedure to install a memory module blank
is similar to that of the memory module.
Installing a memory module
The procedure for installing a DIMM module, an NVDIMM-N module, and a DCPMM are identical.
Prerequisites
Follow the safety guidelines listed in
Safety instructions
on page 71.
CAUTION:
Ensure that you install the NVDIMM-N battery if you are using NVDIMM-N.
CAUTION:
To prevent data loss and potential damage to your system, ensure that your system, LEDs on system, LEDs
on NVDIMM-N and LEDs on NVDIMM-N battery are turned off before installing the NVDIMM-N battery.
CAUTION:
To ensure proper system cooling, memory module blanks must be installed in any memory socket that is not
occupied. Remove memory module blanks only if you intend to install memory modules in those sockets.
Steps
1.
Locate the appropriate memory module socket.
CAUTION:
Handle each memory module only by the card edges, ensuring not to touch the middle of the memory
module or metallic contacts.
CAUTION:
To prevent damage to the memory module or the memory module socket during installation, do not bend
or flex the memory module. You must insert both ends of the memory module simultaneously.
2.
Open the ejectors on the memory module socket outward to allow the memory module to be inserted into the socket.
3.
Align the edge connector of the memory module with the alignment key of the memory module socket, and insert the memory module
in the socket.
CAUTION:
Do not apply pressure at the center of the memory module; apply pressure at both ends of the memory
module evenly.
NOTE:
The memory module socket has an alignment key that enables you to install the memory module in the socket
in only one orientation.
4.
Press the memory module with your thumbs until the socket levers firmly click into place.
Figure 41. Installing a memory module
NOTE:
NVDIMM-N memory slots are not hot-pluggable.
100
Installing and removing system components