SpecificationItem
-40° to 167°F (-40° to 75°C)Nonoperating and storage
temperature
Hot to cold—at a maximum rate of 86°F (30°C) per hour
Cold to hot—at maximum rate of 204.8°F (96°C) per hour
Thermal transition
Operating, nonoperating and storage —10 to 95 percentHumidity (RH), ambient
(noncondensing)
-60 to 3000mAltitude (operating and
nonoperating)
LpAD—57 dBA
LwAD—no greater than 7.2 Bels
This is with four power supply modules installed and delivering 50 percent of
rated output power; measured according to International Organization for
Standardization (ISO) 7779 and declared according to ISO 9296
Sound pressure level
(LpAD) and sound power
level (LwAD)
Chassis—Right to left (when facing the front of the chassis)
Power supply—Front to back
Airflow
Operating—5G 11ms (Half-sine)
Nonoperating and storage— 15G 11ms (Half-sine)
Shock
• Operating— 0.15G (10Hz-500Hz)
• Nonoperating and storage— 0.8G (10Hz-500Hz)
Sine Vibration
SlopeAcceleration Spectral
Density
Spectral Break Point
Frequencies
Random Vibration
(Operating)
6 db /octave-2.5 – 5 Hz
-0.1 [(m/s²)²]/Hz
(0.001 g²/Hz)
5 – 100 Hz
24 db /octave-100 – 200 Hz
Slope
Acceleration Spectral
Density
Spectral Break Point
Frequencies
Random Vibration
(Nonoperating and
Storage)
6 db /octave-2.5 – 5 Hz
-1.0 [(m/s²)²]/Hz*
(0.01 g²/Hz)
5 – 100 Hz
24 db /octave-100 – 200 Hz
4
Minimum ambient temperature for cold startup is 0ºC
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
118
Specifications
Catalyst 9404R Switch Chassis Specifications