Reference Guide

Table 3. PSU specifications (continued)
PSU Class Heat dissipation
(maximum)
Frequency Voltage Power rating Current
1600 W AC Platinum 6000 BTU/hr 50/60 Hz 100–120 V AC,
autoranging
derated to 800 W 10 A
200–240 V AC,
autoranging
1600 W
2000 W AC Platinum 7500 BTU/hr 50/60 Hz 100–120 V AC,
autoranging
derated to 1000 W 11.5 A
200–240 V AC,
autoranging
2000 W
2400 W AC Platinum 9000 BTU/hr 50/60 Hz 100-120 V AC,
autoranging
derated to 1400 W 16 A
200–240 V AC,
autoranging
2400 W
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: PSUs rated for 1600 W and higher require high-line voltage (200-240 V) to supply their rated capacity.
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 4. Expansion card slots supported on the system board
PCIe slot on the
system board
Processor
connection
PCIe slots on system
board (Height)
PCIe slots on
system board
(length)
Link width Slot width
Slot 1 Processor 1 full height half length x8 x16
Slot 2 Processor 1 full height half length x16 x16
Slot 3 Processor 1 full height half length x16 x16
Slot 4 Processor 2 full height half length x16 x16
Slot 5 Processor 2 full height half length x8 x16
Slot 6 Processor 2 full height half length x8 x16
Slot 7 Processor 2 full height half length x16 x16
PowerEdge R940 technical specifications 7