Name: 34-1891-01 Cisco 135W Power Supply for C3700 Series Routers 100-240V AC
Brand: Cisco
SKU: 34-1891-01
Price: 687.90 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The 34-1891-01 Cisco 135-Watts Power Supply for C3700 Series delivers consistent, high-output AC power with global voltage compatibility. Engineered for seamless replacement in Cisco C3700 and 3725 routers, it ensures stable operation and continuous uptime in enterprise and branch networking scenarios.

General Information
Brand	Cisco
Part Number	34-1891-01
Product Type	Desktop Power Supply
Condition	Refurbished

Technical Information
Input Voltage	100-240V AC
Input Frequency	50-60 Hz
Max. Output Power	135W
Hot Swappable	No
Redundant Support	No
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Multi 12V Rail
Number of Fans	1

Compatibility
Form Factor	Proprietary

Physical Characteristics
Dimensions	10 x 8 x 6 inches
Weight	5.00

Certifications and Environmental
Compliance Standards	RoHS, CE

Product Description
This is a replacement AC power supply intended for use with Cisco C3700 and 3725 routers, delivering reliable power to networking equipment in enterprise or branch deployments. Key Features High-capacity 135 W output supports standard router loads Wide input range (100-240 V AC, 50-60 Hz) for global compatibility Designed for direct fit into Cisco C3700/3725 chassis Delivers consistent, stable voltage for uninterrupted operation Refurbished/tested units available with full functionality Ideal for replacing failed or aging power modules in branch office routers or enterprise infrastructure, this unit ensures continuous uptime in environments requiring reliable AC supply. Supports maintenance of network uptime in standard rack or office installations.

Use Cases
The 34-1891-01 Cisco 135W Power Supply is primarily utilized in enterprise networking environments requiring reliable power for Cisco C3700 and 3725 series routers. It is well-suited for IT professionals managing network infrastructure in data centers, branch offices, and service provider settings where uptime and power stability are critical. How It's Used: Providing consistent power to Cisco routers in enterprise data centers ensuring uninterrupted network services. Supporting network equipment in remote or branch office deployments where space-efficient, rack-mountable power supplies are necessary. Maintaining router uptime in service provider edge environments handling high-throughput traffic and demanding workloads. Enabling IT teams to replace or upgrade power supplies during network hardware refresh cycles without impacting system availability. Powering routers in virtualization and multi-service network environments requiring resilient AC power sources. This power supply supports operational reliability by delivering stable AC output essential for high-performance router operation, facilitating scalable network deployments and minimizing downtime across critical IT infrastructure.