SonicWALL Internet Security Appliance Quick Start Guide Page 9
SonicWALL PRO 2040 Rear View
• Power Input - Connects to the external power supply that is provided with the SonicWALL. The use of
an Uninterruptible Power Supply (UPS) is recommended to protect the SonicWALL against damage or
loss of data due to electrical storms, power failures, or power surges.
• Internal Fans - Two chassis fans and one power supply fan maintain the temperature of the
SonicWALL and prevent overheating.
Alert! Obstructing the airflow or blocking the fans causes the SonicWALL to overheat. Be sure to allow
enough room for circulating air around the appliance.
Power Input
100-240VAC
Internal Fans
Power
Switch
50-60Hz
1.5A
Power Supply Fan