Cisco PWR-3900-AC 400W AC Power Supply for 3925 / 3945 Routers – Open Box
The Cisco PWR-3900-AC is a 400W AC power supply module designed specifically for the Cisco 3925 and 3945 Integrated Services Routers (ISR). Engineered to provide stable and efficient power delivery in enterprise and branch office environments, this hot-swappable PSU offers dependable operation with quiet air-cooled performance.
This open box unit is unused, fully functional, and ideal for replacing a failed PSU or provisioning a secondary redundant power supply in Cisco 3900 Series routers.
✔ Key Features & Benefits
✔ 400W power output for Cisco 3925 and 3945 Integrated Services Routers
✔ Plug-in design for fast installation and hot-swap capability
✔ Integrated airflow cooling system with low 55 dB noise level
✔ Compatible with AC power environments (100–240V)
✔ Reliable Cisco OEM component for stable router performance
✔ Ideal Uses
✔ Primary or replacement PSU for Cisco 3925 or 3945 routers in enterprise setups
✔ Redundant power supply configuration in high-availability networks
✔ Spare unit for IT departments and network infrastructure teams
✔ Lab and test environments running Cisco ISR routers
✔ Specifications
✔ Condition: New device in open box. Fully functional and unused.
✔ Model: PWR-3900-AC
✔ Brand: Cisco
✔ Part Number: PWR-3900-AC
✔ Compatible Devices: Cisco 3925 / 3945 Integrated Services Routers
✔ Output Wattage: 400 Watts
✔ Voltage: 240 Volts
✔ Connector Type: Plug-in Module
✔ Cooling Method: Air-cooled
✔ Noise Level: 55 dB
✔ Mounting: Internal router PSU slot
✔ Product Dimensions: 35.56 x 19.05 x 27.94 cm
✔ Weight: 2.88 kg
✔ UPC: 151903598481 / 080850222272 / 008265827844 / 882658278440
✔ Warranty: 3 Month Carry-in Warranty
✔ What's in the Box: Cisco PWR-3900-AC Power Supply Module