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Dell PowerEdge R820 - Installing Memory Modules; Hard Drives

Dell PowerEdge R820
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50 PowerEdge R820 Technical Guide
Rack rail specifications
Table 29 lists the spacing dimensions for the R820 sliding and static rails.
Table 29. Rail adjustability range
Product
Rail
identifier
Rail type
Rail adjustability range (mm)
Rail depth (mm)
Square
Round
Threaded
without
CMA
with
CMA
Min
Max
Min
Max
Min
Max
R820
B6
Sliding
676
868
662
861
676
883
714
845
B4
Static
608
879
594
872
604
890
622
The adjustment range of the rails is a function of the type of rack in which they are being mounted.
The min-max values listed above represent the allowable distance between the front and rear
mounting flanges in the rack. Rail depth without the CMA represents the minimum depth of the rails
with the outer CMA brackets removed (if applicable) as measured from the front mounting flanges
of the rack.
USB peripherals
USB peripherals are supported through the front and back USB ports on the R820. These ports are
USB 2.0 compliant.

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