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Acoustic Noise for EX4400 Switches

 

Table 1 lists the acoustic noise measurements for EX4400 switch models taken from the front of the chassis at 23° C, in compliance with ISO 7779.

Table 1: Acoustic Noise for EX4400 Switches

Switch Model

Power Supply or Power Supplies Installed

Acoustic Noise

in dB(A)

EX4400-24T

One 550-W AC power supply with front-to-back airflow

42.7

One 550-W AC power supply with back-to-front airflow

46.08

One 550-W DC power supply with front-to-back airflow

42.59

One 550-W DC power supply with back-to-front airflow

46.19

Two 550-W AC power supplies with front-to-back airflow

41.68

Two 550-W AC power supplies with back-to-front airflow

46.03

Two 550-W DC power supplies with front-to-back airflow

42.54

Two 550-W DC power supplies with back-to-front airflow

46.54

EX4400-24P

One 1050-W AC power supply with front-to-back airflow

44.45

Two 1050-W AC power supplies with front-to-back airflow

44.23

EX4400-48T

One 550-W AC power supply with front-to-back airflow

42.32

One 550-W AC power supply with back-to-front airflow

44.78

One 550-W DC power supply with front-to-back airflow

42.72

One 550-W DC power supply with back-to-front airflow

44.6

Two 550-W AC power supplies with front-to-back airflow

42.87

Two 550-W AC power supplies with back-to-front airflow

44.64

Two 550-W DC power supplies with front-to-back airflow

42.73

Two 550-W DC power supplies with back-to-front airflow

44.72

EX4400-48P

One 1600-W AC power supply with front-to-back airflow

44.78

Two 1600-W AC power supplies with front-to-back airflow

44.68

EX4400-48F

One 550-W AC power supply with front-to-back airflow

43.23

One 550-W AC power supply with back-to-front airflow

44.91

One 550-W DC power supply with front-to-back airflow

43.71

One 550-W DC power supply with back-to-front airflow

44.93

Two 550-W AC power supplies with front-to-back airflow

43.35

Two 550-W AC power supplies with back-to-front airflow

44.79

Two 550-W DC power supplies with front-to-back airflow

43.69

Two 550-W DC power supplies with back-to-front airflow

44.61