Figure 5: Rear Panel of a Switch with Fan
An AC power connector3Security Slot1
A loop (for the optional
power cord retainer)
2
Figure 6: Rear Panel of a Fanless Switch
An AC power connector3Security Slot1
Heat sink fins4A loop (for the optional
power cord retainer)
2
Internal Power Supply
All the switches are powered through their internal power supplies. The internal power supply is an autoranging
unit that supports input voltages between 100 and 240 VAC (max of 90V to 264V). The AC frequency range
Cisco Catalyst 1000 Series 24-Port and 48-Port Switch Hardware Installation Guide
8
Product Overview
Internal Power Supply