Dell EMC VxFlex Ready Node R840 Owner's Manual - Page 20
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Technical specifications
System battery specifications
The R840 system supports CR 2032 3.0-V lithium coin cell system batteries.
Expansion card riser specifications
R840 servers support up to six PCI express (PCIe) generation 3 expansion cards that can be installed on the system
board and expansion card risers.
Figure 4 PCIe slot numbers on 24 x 2:5-inch drive R840 server
Table 5 Expansion card riser specifications for R840 system
PCIe slot
1
2
X16 PCIe Riser 1
3
On the system
4
On the system
5
6
X16 PCIe Riser 2
R840xd Owner's Guide
20
Riser
Processor
connection
Dummy slot
Processor 1
Processor 1
board
Processor 2
board
Dummy slot
Processor 2
Height
NA
NA
Full height
Low profile
Low profile
NA
NA
Full height
Length
Slot width
NA
NA
Full length
x16
Half length
x16
Half length
x16
NA
NA
Full length
x16