Description:

The Cisco PWR-2911-POE 390W AC Power Supply is used in Cisco 2911 Integrated Services Routers to provide reliable electrical power for router operation and Power over Ethernet functionality. This internal power supply delivers up to 390 watts of power, enabling the router to support PoE-capable modules and connected network devices such as IP phones, wireless access points, and security cameras. Designed for enterprise networking environments, the power supply converts standard AC input into the required DC power for router systems while maintaining stable operation under continuous network loads. It integrates directly into the router chassis, ensuring efficient power distribution and dependable performance in branch network deployments. The unit supports PoE-enabled network modules and switching interfaces, making it suitable for integrated voice and data network infrastructures. Network administrators, telecom technicians, and system integrators commonly install this power supply for router maintenance, hardware replacement, power upgrades, and restoration of PoE functionality in Cisco 2911 router systems.

Applications:

The Cisco PWR-2911-POE power supply is commonly used in enterprise branch networks where Cisco 2911 routers are deployed to manage routing, security, and unified communications services. It supports environments where Power over Ethernet is required for devices such as VoIP phones, wireless access points, and surveillance cameras connected through router switch modules. The power supply is widely installed in corporate offices, retail networks, healthcare facilities, educational institutions, and government branch locations where integrated networking equipment must operate continuously and reliably.

Technical Specifications:

• Brand: Cisco
• Part Number: PWR-2911-POE
• Alternate Part Number: 341-0236-04
• Product Type: AC Power Supply
• Power Output: 390 W
• Input Voltage: 100–240 V AC
• Input Frequency: 50/60 Hz
• Compatibility: Cisco 2911 Integrated Services Router
• Function: Provides router power and PoE support for compatible modules
• Installation Type: Internal router power supply
• Power Conversion: AC to DC internal conversion
• Form Factor: Router chassis power supply module
• Deployment Environment: Enterprise branch routers and networking infrastructure

Common Replacements:

• Cisco PWR-2911-AC Power Supply
• Cisco PWR-2921-POE Power Supply
• Cisco PWR-390W-AC Power Supply