Name: PWR-2921-51-AC Cisco 340W Internal Power Supply 100-240V 50-60Hz
Brand: Cisco
SKU: PWR-2921-51-AC
Price: 200.06 USD
Availability: InStock
Rating: 4.8 (130 reviews)

Product Overview
The PWR-2921-51-AC Cisco power supply is built to supply consistent power to Cisco 2921 routers and fits inside the router enclosure. It’s designed for environments that require stable operation and supports a broad voltage input range, making it suitable for use across different regions.

General Information
Brand	Cisco
Part Number	PWR-2921-51-AC
Product Type	Desktop Power Supply
Condition	Refurbished

Technical Information
Input Voltage	100-240V AC
Input Frequency	50-60 Hz
Output	12V
Hot Swappable	No
Redundant Support	No
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Single 12V Rail
Number of Fans	1

Compatibility
Form Factor	Proprietary
Compatible For	Cisco 2921 ISR

Physical Characteristics
Weight	3.00

Certifications and Environmental
Eco Friendly	Yes
Compliance Standards	WEEE, RoHS, CE, FCC, cULus

Product Description
This power supply is designed to provide reliable power to Cisco 2921 routers, ensuring consistent operation for network infrastructure. Typically installed inside the router chassis, it supports a wide range of input voltages, making it suitable for global use. Often found in enterprise networks and branch office setups, this unit is essential for IT professionals who maintain Cisco routing equipment and need dependable power components. Key Features Delivers up to 340 watts to support router performance Compatible with Cisco 2921 routers for direct replacement or upgrade Accepts international voltage and frequency standards Internal design reduces external cabling and clutter Designed for stable and efficient power delivery under typical network loads Commonly deployed in office or data center environments, this power supply helps maintain network uptime by providing steady power. It plays a crucial role in keeping communication lines active and supporting critical network operations.

Use Cases
The PWR-2921-51-AC power supply is primarily utilized in enterprise and branch office environments where Cisco 2921 routers serve as critical network infrastructure. It supports IT teams managing medium-sized networks requiring reliable power delivery to maintain uninterrupted connectivity and network performance. How It's Used: Providing stable power for Cisco 2921 routers deployed in distributed enterprise branch offices handling localized traffic. Supporting network equipment in SMB data centers that require internal power solutions to optimize rack space and reduce external cabling. Maintaining operational continuity in edge computing setups where compact, integrated power supplies reduce downtime risks. Enabling IT administrators to ensure consistent router performance in multi-site WAN environments with varying regional power standards. Facilitating seamless power integration in remote office deployments where maintenance access is limited and internal power modules simplify servicing. This internal power supply enhances network infrastructure stability by delivering consistent energy to Cisco 2921 routers, allowing IT operations to scale with minimal power disruptions. Its broad voltage compatibility supports diverse geographic deployments, ensuring routers maintain optimal functionality in demanding environments.