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
Riser
Processor
connection
Height
Length
Slot width
1
Dummy slot
NA
NA
NA
NA
2
X16 PCIe Riser 1
Processor 1
Full height
Full length
x16
3
On the system
board
Processor 1
Low profile
Half length
x16
4
On the system
board
Processor 2
Low profile
Half length
x16
5
Dummy slot
NA
NA
NA
NA
6
X16 PCIe Riser 2
Processor 2
Full height
Full length
x16
Technical specifications
20
R840xd Owner's Guide
