3
When the system maintenance switch position 6 is set to the On position and Secure Boot is enabled, some configurations cannot be
restored. For more information, see Secure Boot.
DIMM label identification
To determine DIMM characteristics, see the label attached to the DIMM. The information in this section helps you to use
the label to locate specific information about the DIMM.
Item Description Example
1 Capacity
8 GB
16 GB
32 GB
64 GB
128 GB
2 Rank
1R = Single rank
2R = Dual rank
4R = Quad rank
8R = Octal rank
3 Data width on DRAM
x4 = 4-bit
x8 = 8-bit
x16 = 16-bit
4 Memory generation
PC4 = DDR4
Table Continued
Component identification 13
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