Psu Specifications; System Battery Specifications; Expansion Bus Specifications - Dell EMC PowerEdge R940 Installation And Service Manual

PSU specifications

The PowerEdge R940 system supports up to two AC or DC power supply units (PSUs).
Table 18. PSU specifications
PSU Class
1100 W AC Platinum
1100 W DC N/A
1100 W Mixed Platinum
Mode HVDC (for
N/A
China and Japan
only)
1600 W AC Platinum
2000 W AC Platinum
2400 W AC Platinum
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
Slot 8
Riser 2 (IO_RISER2) Slot 9
Slot 10
26 Technical specifications
Heat dissipation
(maximum)
4100 BTU/hr
4416 BTU/hr
4100 BTU/hr
4100 BTU/hr
6000 BTU/hr
7500 BTU/hr
9000 BTU/hr
Processor PCIe slots on riser
connection (Height)
Processor 3 full height
Processor 3 full height
Processor 3 full height
Frequency Voltage
50/60 Hz 100–240 V AC, autoranging
N/A –(48–60) V DC, autoranging
50/60 Hz 100–240 V AC, autoranging
N/A 200–380 V DC, autoranging
50/60 Hz 100–240 V AC, autoranging
50/60 Hz 100–240 V AC, autoranging
50/60 Hz 100-240 V AC, autoranging
PCIe slots
on riser
(length)
3/4 length
half length
half length
Current
12 A–6.5 A
32 A
12 A–6.5 A
6.4 A–3.2 A
10 A
11.5 A
16 A
Link width Slot width
x16 x16
x16 x16
x16 x16