Dell PowerEdge XR4000r Installation And Service Manual page 22

● In redundant mode, two power supplies are required. A single power supply failure is not supported.
● If memory slots are not fully populated, dummy DIMMs are required.
ASHRAE A4 Support Restriction for NAF (Normal Air Flow Direction) Configurations
● CPU TDP greater than 120W are not supported within A4.
● Nvidia A30 card is not supported above 45°C environment temperature.
● Nvidia A2 GPU card is not supported above 45°C environment temperature.
● In redundant mode, two power supplies are required. A single power supply failure is not supported.
● If memory slots are not fully populated, dummy DIMMs are required.
22 Technical specifications