PSU specifications
The PowerEdge R940 system supports up to two AC or DC power supply units (PSUs).
Table 18. PSU specifications
PSU
Class
Heat dissipation
(maximum)
Frequency
Voltage
Current
1100 W AC
Platinum
4100 BTU/hr
50/60 Hz
100–240 V AC, autoranging
12 A–6.5 A
1100 W DC
N/A
4416 BTU/hr
N/A
–(48–60) V DC, autoranging
32 A
1100 W Mixed
Mode HVDC (for
China and Japan
only)
Platinum
4100 BTU/hr
50/60 Hz
100–240 V AC, autoranging
12 A–6.5 A
N/A
4100 BTU/hr
N/A
200–380 V DC, autoranging
6.4 A–3.2 A
1600 W AC
Platinum
6000 BTU/hr
50/60 Hz
100–240 V AC, autoranging
10 A
2000 W AC
Platinum
7500 BTU/hr
50/60 Hz
100–240 V AC, autoranging
11.5 A
2400 W AC
Platinum
9000 BTU/hr
50/60 Hz
100-240 V AC, autoranging
16 A
NOTE:
Heat dissipation is calculated using the PSU wattage rating.
NOTE:
This system is also designed to connect to the IT power systems with a phase to phase voltage not exceeding 240 V.
NOTE:
If a system with 2400 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 1400 W.
NOTE:
If a system with 2000 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 1000 W.
NOTE:
If a system with 1600 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 800 W.
NOTE:
If system with 1100 W AC PSU or 1100 W Mixed Mode HVDC PSU operates at low line 100–120 V AC, then the power
rating per PSU is derated to 1050 W.
System battery specifications
The PowerEdge R940 system supports CR 2032 3.0-V lithium coin cell system battery.
Expansion bus specifications
The PowerEdge R940 system supports PCI express (PCIe) generation 3 expansion cards, which you can install on the expansion slots
available on the system board. If you are using PowerEdge R940 system with four processor configuration, then you can also install the
cards by using the expansion card riser. This system supports up to two expansion card risers. The following table provides the expansion
card riser specifications:
Table 19. Expansion card riser configurations
Riser
PCIe slot on the
expansion card riser
Processor
connection
PCIe slots on riser
(Height)
PCIe slots
on riser
(length)
Link width
Slot width
Riser 2 (IO_RISER2)
Slot 8
Processor 3
full height
3/4 length
x16
x16
Slot 9
Processor 3
full height
half length
x16
x16
Slot 10
Processor 3
full height
half length
x16
x16
26
Technical specifications
