System Memory; Installing The So-Dimm Module - DFI OPS150-CS User Manual

X System Memory
DDR4_2 (Bottom Side)
DDR4_1 (Top Side)
The system board supports the following memory interface.
Single Channel (SC)
Data will be accessed in chunks of 64 bits from the memory channels.
Dual Channel (DC)
Data will be accessed in chunks of 128 bits from the memory channels. Dual channel provides
better system performance because it doubles the data transfer rate.
Single Channel DIMMs are on the same channel. DIMMs in a channel can be identi-
cal or completely different. However, we highly recommend using
identical DIMMs. Not all slots need to be populated.
Dual Channel DIMMs of the same memory configuration are on different channels.
Features
• Two 260-pin SO-DIMM up to 32GB
• Dual Channel DDR4 2666MHz
User's Manual | OPS150-CS

Installing the SO-DIMM Module

DDR4_1 can be installed only after
1) the top cover is removed,
2) and the heatsink and fan are removed.
DDR4_2 can be installed only after
1) the module bracket on the bottom of the chassis is removed as instructed previously,
2) or the system board is removed from the chassis, which is neither necessary nor recom-
mended.
Before installing the memory module, please make sure that the following safety cautions are
well-attended.
1. Make sure the PC and all other peripheral devices connected to it has been powered
down.
2. Disconnect all power cords and cables.
3. Locate the SO-DIMM socket on the system board
4. Make sure the notch on memory card is aligned to the key on the socket.
Retention Notch
Notch
Retention Clip
Key
Chapter 2
HARDWARE INSTALLATION
DDR4 SO-DIMM
Socket Top View
17