Cisco 3900-FANASSY Cisco fan tray / fan module

Brand: Cisco | Category: Accessories & Components

SKU: CSC-3900-FANASSY | Part #: 3900-FANASSY | MPN: 3900-FANASSY

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The Cisco 3900-FANASSY is a chassis-integrated slide-in fan tray assembly designed for hot-swap field replacement within Cisco 3900 Series ISR G2 routers. This genuine Cisco fan module (part number 3900-FANASSY) fits directly into the dedicated fan tray bay of compatible 3925 and 3945 platforms, delivering forced-air cooling for the router chassis and all installed service modules. As a field-replaceable unit with full hot-swap support, the 3900-FANASSY enables rapid maintenance without powering down critical network infrastructure, minimizing service interruptions in demanding data center and branch office environments.

Network engineers and IT operations teams responsible for maintaining Cisco ISR G2 deployments rely on this cooling module to sustain optimal thermal performance across operating conditions from 0°C to 40°C ambient temperature. The 3900-FANASSY integrates seamlessly with Cisco IOS environmental monitoring systems, providing real-time fan fault detection and alerting capabilities via SNMP and syslog—critical for proactive system health management. Organizations running production routing workloads depend on this accessory to prevent thermal throttling and extend platform lifespan, making it an essential inventory item for any shop maintaining Cisco 3900 Series infrastructure.

The 3900-FANASSY is eligible for support under Cisco SMARTnet and related Cisco service contract programs, ensuring warranty coverage and vendor accountability. Whether you are expanding your Cisco ISR G2 fleet, refreshing aging cooling infrastructure, or maintaining spare-parts inventory for rapid response to field failures, Omnixon Global supplies genuine Cisco components backed by established distribution partnerships. Contact us today to submit an RFQ for the Cisco 3900-FANASSY and confirm availability, configuration options, and lead times for your deployment timeline.

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