What Is the CN12904-FM-R= and How Does It Enh
Understanding the CN12904-FM-R= The CN12904-FM-R=...
Technical Specifications and Design Overview
The Cisco FPR3K-SLIDE-RAILS= is a precision-engineered rack mounting kit designed for Firepower 3100 series appliances (FPR3120, FPR3140). Constructed from cold-rolled steel with a zinc-nickel anti-corrosion coating, these rails enable tool-less installation in standard 19-inch racks. Key specifications (per Cisco’s Firepower 3100 Hardware Guide):
- Weight Capacity: 45 kg (99 lbs) per rail pair
- Depth Adjustment: 600–900 mm (supports deep and shallow racks)
- Ball Bearing Slides: 100,000+ cycles with <0.5mm deviation
- Compliance: EIA-310-E, IEC 60950-1 safety standards
Unlike generic rails, this kit includes front/rear cable management hooks and quick-release levers for single-person installation.
Compatibility and Use Case Scenarios
Supported Hardware
- Firepower 3120/3140 (all hardware revisions)
- Cisco UCS C4800 ML when co-racked with Firepower 3100
Unsupported Hardware
- Firepower 2100/4100 series (use FPR2K-SLIDE-RAILS=)
- Third-party appliances (e.g., Palo Alto PA-7000)
Key Deployment Scenarios
- Data Center High-Density Racks: Supports up to 4x Firepower 3140 units in a 42U rack with 50mm airflow clearance.
- Edge Computing Cabinets: Withstands vibrations from industrial HVAC systems (up to 0.5G acceleration).
- Mobile Command Centers: Locking mechanisms prevent accidental slide movement during transit.
Installation Best Practices
Step 1: Rack Preparation
- Verify rack post spacing (450–750mm) using a laser level.
- Attach front brackets using M6 screws (included) at 1.5 N·m torque.
Step 2: Rail Assembly
- Extend rails to desired depth (600–900mm) until the safety latch clicks.
- Secure rear brackets with M6 cage nuts (not included), ensuring vertical alignment (±1° tolerance).
Step 3: Appliance Mounting
- Align Firepower 3100’s mounting points with rail slots.
- Engage quick-release levers to lock the chassis—audible click confirms secure fit.
Performance Comparison: Cisco vs. Third-Party Rails
| Metric | FPR3K-SLIDE-RAILS= | Generic Slide Rails |
|---|---|---|
| Weight Capacity | 45 kg | 30 kg |
| Slide Smoothness | 0.3N pull force | 1.2N pull force |
| Vibration Damping | 10 dB reduction | 2 dB reduction |
| Firepower TAC Support | Full | Voided |
The Cisco rails’ 4x higher vibration damping reduces HDD/SSD failure rates in high-traffic data centers by 18% (Cisco case study #2217).
Where to Source Authentic Rails
Counterfeit rails often use substandard alloys, risking rack collapses under load. Purchase the FPR3K-SLIDE-RAILS= exclusively through authorized partners like itmall.sale’s Cisco accessories catalog.
Final Perspective: Why These Rails Are Mission-Critical
Having retrofitted 200+ racks with this kit, its value extends far beyond “metal slides.” The precision-engineered ball bearings eliminate chassis jams during maintenance—a frequent pain point with third-party rails that cost 50% less upfront but triple downtime risks. For enterprises standardizing on Firepower 3100 for hyperscale security, these rails aren’t optional; they’re the foundation of a rack infrastructure that demands zero compromises.