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EX3400-FAN-AFO spare fan
Front-to-back airflow
The cooling system in an EX3400 switch consists of two fans along the rear of the chassis and a fan each in the power supplies.
In switch models with front-to-back airflow, the air intake is located on the front of the chassis. Cool air is pulled into the chassis and pushed toward the rear of the chassis. Hot air exhausts from the rear of the chassis.
EX3400-FAN-AFO spare fan
Front-to-back airflow
The cooling system in an EX3400 switch consists of two fans along the rear of the chassis and a fan each in the power supplies.
In switch models with front-to-back airflow, the air intake is located on the front of the chassis. Cool air is pulled into the chassis and pushed toward the rear of the chassis. Hot air exhausts from the rear of the chassis.