- play_arrow Fast Track: Initial Installation
- play_arrow Site Planning and Preparation
- play_arrow Installation and Configuration
- play_arrow Maintain Components
- play_arrow Troubleshoot Hardware
- play_arrow Contact Customer Support and Return the Chassis or Components
- play_arrow Safety and Compliance Information
- Safety Information for EX4000
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Warning Statement for Norway and Sweden
- Fire Safety Requirements
- Installation Instructions Warning
- Chassis and Component Lifting Guidelines
- Restricted Access Warning
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Radiation from Open Port Apertures Warning
- Laser and LED Safety Guidelines and Warnings
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Action to Take After an Electrical Accident
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- Multiple Power Supplies Disconnection Warning
- TN Power Warning
- EX Series Agency Approvals
- Compliance Statements for EMC Requirements for EX Series Switches
- Compliance Statements for Acoustic Noise for EX Series Switches
- Statements of Volatility for Juniper Network Devices
Cooling System and Airflow in an EX4000 Switch
EX4000-12MP has fanless convection cooling. EX4000-24MP and EX4000-48MP have 2 and 3 fixed inbuilt fans respectively. The airflow direction of the fans of the EX4000-24MP and EX4000-48MP switches is front-to-back.
EX4000 Switches with Front-to-Back Airflow
In EX4000 switch models with front-to-back airflow, air enters through vents on the front panel to cool the chassis. The hot air then exits through the vents on the rear panel.
The front side of a switch is the side where the ports are located. The rear side is where the fans are located.

