Dell PowerEdge R250 EMC Installation and Service Manual - Page 46

System memory, System memory guidelines

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Table 16. Cable routing - 2 x 3.5-inch cable drive configuration with SATA connection From To HDD0 (HDD0 signal connector) SL1_PCH_SA1 (Signal connector on system board) HDD1 (HDD1 signal connector) SL1_PCH_SA1 (Signal connector on system board) Power connector on HDD0 and HDD1 PIB_CONNECTOR (PIB connector on system board) ODD (Optical Disk Drive) connector HDD/ODD_PWR (HDD/ODD power connector on system board) System memory System memory guidelines The PowerEdge R250 system supports DDR4 unregistered DIMMs (UDIMMs). System memory holds the instructions that are executed by the processor. Your system contains four memory sockets that are organized into two channels. In each channel, the first socket is marked white and the second socket black. Memory channels are organized as follows: Table 17. Memory channels Channel 0 A1 and A3 Channel 1 A2 and A4 Figure 40. Memory socket location 46 Installing and removing system components

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Table 16. Cable routing - 2 x 3.5-inch cable drive configuration with SATA connection
From
To
HDD0 (HDD0 signal connector)
SL1_PCH_SA1 (Signal connector on system board)
HDD1 (HDD1 signal connector)
SL1_PCH_SA1 (Signal connector on system board)
Power connector on HDD0 and HDD1
PIB_CONNECTOR (PIB connector on system board)
ODD (Optical Disk Drive) connector
HDD/ODD_PWR (HDD/ODD power connector on system
board)
System memory
System memory guidelines
The PowerEdge R250 system supports DDR4 unregistered DIMMs (UDIMMs). System memory holds the instructions that are
executed by the processor.
Your system contains four memory sockets that are organized into two channels. In each channel, the first socket is marked
white and the second socket black.
Memory channels are organized as follows:
Table 17. Memory channels
Channel 0
Channel 1
A1 and A3
A2 and A4
Figure 40. Memory socket location
46
Installing and removing system components