Cisco PWR-3900-POE Power Supply for 3945/3925 w/ PoE - 1 Year Warranty PWR3900POE

Description:

The Cisco PWR-3900-POE Power Supply is used in Cisco 3925 and 3945 Integrated Services Router systems to provide AC power and integrated Power over Ethernet capability for connected network devices within enterprise routing infrastructures. Commonly installed in Cisco ISR 3900 Series router deployments used in enterprise branch networks, corporate communication systems, and unified communications environments that require reliable router power and PoE support. Maintenance teams, network engineers, and system integrators use this power supply for router maintenance, hardware replacement, infrastructure upgrades, and ensuring continuous operation of Cisco routers supporting data and voice communication services.

Applications:

The Cisco PWR-3900-POE power supply is deployed in enterprise networking environments where Cisco 3925 and 3945 Integrated Services Routers support WAN connectivity and integrated communications services. It is commonly used in branch office networks, enterprise WAN infrastructures, and business communication systems where routers must provide stable system power and Power over Ethernet for connected devices such as IP phones and network equipment. Network administrators install this module during maintenance operations or power supply replacement to maintain reliable router performance within Cisco network infrastructures.

Technical Specifications:

• Manufacturer Part Number (MPN): PWR-3900-POE
• Product Type: Router Power Supply with Power over Ethernet
• Compatible Platforms: Cisco 3925 and Cisco 3945 Integrated Services Routers
• Input Voltage: 100–240V AC
• Frequency: 50–60 Hz
• Power Type: AC Power Supply with integrated PoE capability
• Installation: Internal power supply module
• Function: Provides router system power and PoE support for connected devices
• Application: Replacement or upgrade power supply for Cisco ISR 3900 Series routers
• Manufacturer: Cisco Systems

Common Replacements:

• Cisco PWR-3900-AC Power Supply
• Cisco PWR-3900-DC Power Supply
• Cisco PWR-3845-AC-IP Power Supply