Name: PWR-2821-51-AC Cisco 280W Redundant Power Supply for 2821/2851 Routers
Brand: Cisco
SKU: PWR-2821-51-AC
Price: 149.00 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Cisco 280-Watts Redundant Power Supply for 2821 and 2851 routers is a key component that provides backup power to avoid downtime. It fits directly into the Cisco router chassis and automatically switches to provide power if the main unit fails, helping organizations maintain stable network performance without interruption.

General Information
Brand	Cisco
Part Number	PWR-2821-51-AC
Product Type	Desktop Power Supply
Condition	Refurbished

Technical Information
Input Voltage	100-240V AC
Input Frequency	50-60 Hz
Output	12V DC
Max. Output Power	280W
Hot Swappable	Yes
Redundant Support	Yes
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Single 12V Rail
Number of Fans	1

Compatibility
Form Factor	Proprietary
Compatible For	Cisco 2821,Cisco 2851

Physical Characteristics
Weight	3.00

Certifications and Environmental
Compliance Standards	RoHS, CE, FCC, cULus

Product Description
This 280-Watt Redundant Power Supply is designed to keep Cisco 2821 and 2851 routers up and running without interruptions. It automatically takes over power delivery in case the primary supply fails, making it a trusted component in critical network setups. Often found in enterprise environments and data centers, this power supply fits seamlessly into existing Cisco router infrastructures. Network administrators and IT teams rely on it to maintain stable connectivity and avoid downtime during power issues. Key Features Delivers consistent 280W power output for demanding router operation Enables automatic failover to backup supply, improving network reliability Compatible with Cisco 2821 and 2851 router chassis for easy integration Supports hot-swapping to minimize service disruptions during replacement Built with Cisco’s quality standards to ensure long-term performance This power supply is typically installed in server rooms or network closets where Cisco 2821 and 2851 routers are deployed. It plays a crucial role in maintaining continuous network operations, especially in environments where uptime is critical.

Use Cases
The Cisco 280-Watt Redundant Power Supply is primarily utilized in enterprise and branch office network environments where Cisco 2821 and 2851 routers are deployed. It is essential in settings requiring uninterrupted network connectivity, such as data centers and remote office setups that support critical applications and communications. How It's Used: Maintaining continuous network uptime in enterprise IT infrastructures by providing failover power to core routing equipment. Supporting small to medium business (SMB) networks with high availability demands in remote or distributed office locations. Ensuring stable operation of edge computing devices that rely on Cisco 2821/2851 routers for data routing and processing. Facilitating rack-mounted deployments where redundant power sources are necessary to meet strict service level agreements (SLAs). Enhancing network resilience in virtualization environments by preventing downtime caused by power supply failures. This power supply unit plays a crucial role in sustaining operational efficiency by minimizing downtime risk and enabling scalable network architectures. Its integration supports consistent performance and reliability in complex IT environments where router availability is critical.