Cisco FPR4K-PWR-DC Full Official Product Description
1. Part Number & Naming Definition
Market Reference Name
Cisco Firepower 4100 Series 950W Hot-Swappable Telecom-Grade DC Power Supply Module
Market SKU:FPR4K-PWR-DC
Official Cisco Spare PID:FPR4K-PWR-DC-950=
Naming Breakdown
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FPR4K: Cisco Firepower 4100 Next-Generation Security Appliance Platform
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PWR: Field-Replaceable Unit (FRU) Power Supply Assembly
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DC: Telecom-grade Direct Current (-48VDC) input variant
Core Product Positioning
The Cisco FPR4K-PWR-DC (FPR4K-PWR-DC-950) is a high-efficiency hot-swappable DC power supply module engineered exclusively for Cisco Firepower 4100 Series next-generation firewalls. It converts standard telecom -48 VDC input into stable regulated DC power for security processors, interface modules, storage drives, fan assemblies and internal control circuits. Optimized for carrier central offices, industrial sites and colocation facilities equipped with traditional -48V DC power infrastructure. This power unit supports load sharing and 1+1 redundant power architecture to eliminate single-point power failures for mission-critical firewall, IPS, VPN and FTD threat defense workloads.
2. Hardware Compatibility
Supported Security Appliances
Cisco Firepower 4110, FPR4112, FPR4115, FPR4125, FPR4145
Supported Operating Software
Cisco Firepower Threat Defense (FTD), ASA with Firepower Services
Critical Deployment Restriction
Do NOT mix AC and DC power supply modules within the same chassis. All installed power supplies must adopt identical input type.
Unsupported Platforms
Firepower 2100, Firepower 4200, Firepower 9300, Catalyst switches, ISR/ASR router families
3. Electrical & Physical Specifications
Form Factor
Rear-mounted hot-swappable FRU with mechanical eject latch; supports OIR (Online Insertion and Removal) without firewall power interruption
Airflow Direction
Front-to-back airflow (port-side intake, rear exhaust), matching native Firepower 4100 thermal design for standard hot/cold aisle data center rack layouts
DC Input Parameters
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Nominal Input Voltage: -40 VDC ~ -60 VDC (telecom standard range)
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Maximum Input Current: 26 A @ -40 VDC
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Built-in reverse polarity protection
Output Specifications
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Rated Continuous Output Power: 950W
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Energy Efficiency: ≥92% efficiency at 50% operating load
Built-In Protection Mechanisms
Overvoltage protection, overcurrent protection, short-circuit protection, thermal overload automatic shutdown
Bi-color rear-panel LED indicator showing normal power-good status and hardware fault alarms
Typical Weight
Approx. 1.32 kg (2.91 lbs)
Environmental Operating Parameters
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Operating Temperature: 0°C to 40°C (32°F – 104°F)
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Storage Temperature: -40°C to 70°C (-40°F – 158°F)
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Relative Humidity: 5% – 90%, non-condensing
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Maximum operating altitude: 3,000 meters (9,842 ft)
4. Supported Functional Capabilities
High Availability Operation
Full OIR support; defective power supply replacement without interrupting firewall inspection and traffic forwarding
Supports dual power load-sharing and 1+1 redundant configuration to maximize network uptime
Power Monitoring & Management
Real-time voltage, current and temperature telemetry accessible via appliance CLI and Firepower Management Center (FMC)
Fault notifications delivered via console logs, Syslog and SNMP v2c/v3 traps
Electronic serial number readable for asset lifecycle inventory management
Intelligent Thermal Control
Internal variable-speed cooling fan dynamically adjusts rotational speed based on internal module temperature to balance cooling capacity and acoustic noise levels
5. Typical Enterprise Deployment Scenarios
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Primary or redundant DC power source for Firepower 4100 NGFWs deployed in telecom carrier sites
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Internet boundary and data center security infrastructure utilizing -48V DC power distribution
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Spare inventory for emergency maintenance and hardware lifecycle refresh of Firepower 4100 security fleets
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Industrial network and remote colocation security deployments with DC power infrastructure
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Mission-critical edge firewall environments requiring power redundancy without AC mains supply
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950-1, IEC/EN 60950-1, CSA C22.2 No.60950-1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental: RoHS 2.0 compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco FPR4K-PWR-DC (FPR4K-PWR-DC-950=) 950W DC Power Supply Module
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Hardware installation instruction sheet
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Safety and regulatory documentation
DC field wiring cables are sold separately
End-of-Life Status
Firepower 4100 series security appliances have reached Cisco End-of-Sale. Spare DC power supply modules remain available via authorized spare channels and second-hand markets. Recommended migration platform: Cisco Secure Firewall 4200 Series.
UNSPSC Classification Code
43222617 – Cisco FPR4K-PWR-DC hot-swappable 950W telecom-grade DC power supply for Firepower 4100 next-generation security appliances, supporting OIR and 1+1 redundant power deployment for carrier and enterprise network security infrastructure.
Hardware Warranty
Original Cisco factory spare units carry limited manufacturer warranty. Refurbished hardware follows reseller commercial warranty agreements.
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