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TL;DR: The Cisco FPR4K-NM-4X40G is an ultra-high-performance network module designed for Firepower 4100 Series Next-Generation Firewalls.

The Cisco FPR4K-NM-4X40G is an ultra-high-performance network module designed for Firepower 4100 Series Next-Generation Firewalls. This cutting-edge security module provides four 40G QSFP+ interfaces, delivering 160Gbps of aggregate throughput for hyperscale data centers, service provider networks, and enterprise core security deployments. With its hardware-accelerated threat inspection and sub-microsecond latency, it sets new standards for high-speed network protection.
✔ Port Configuration:
4x 40G QSFP+ ports (hot-swappable)
Breakout capable (4x10G per port)
Supports SR4/LR4 optics (40GBASE-SR4/LR4)
✔ Performance:
160Gbps aggregate throughput
120Gbps firewall throughput with full inspection
80Gbps IPS/IDS throughput
60Gbps encrypted traffic inspection
✔ Latency: <5 microseconds (hardware bypass mode)
✔ Compatibility: All Firepower 4100 models (4110 through 4140)
✔ Power Consumption: 85W typical (full inspection load)
Next-Gen Security Services:
Machine learning-based threat detection
Encrypted traffic analysis at line rate
DNS-layer security with Umbrella integration
Cloud-Scale Architecture:
Elastic scaling across multiple modules
Containerized security services
High Availability:
Active/Active/Active clustering
Stateful synchronization <500ms
Advanced Visibility:
Cisco Tetration analytics integration
Full packet capture at 40G rates
Flexible Deployment:
Multi-mode operation (L2-L4)
SDN-ready with Cisco ACI integration
Hyperscale data center east-west protection
5G core network security
Financial high-frequency trading protection
Government top-secret network segmentation
Cloud service provider edge security
Quantum Leap Performance:
4x 100G QSFP28 ports (400G aggregate capacity)
300Gbps firewall throughput (2.5x improvement)
200Gbps TLS 1.3 inspection
Revolutionary Security:
Post-quantum cryptography support
Neural network threat detection
Autonomous response engine
Cloud-Native Evolution:
Kubernetes-native security policies
Serverless security functions
Operational Transformation:
AI-driven autonomous operations
Blockchain-based policy verification
Sustainability Leadership:
50% improved power efficiency
Heat-recovery cooling system
Carbon-negative operations mode
✔ 2.5x bandwidth for AI/ML workloads
✔ Quantum-safe security infrastructure
✔ Cloud-native security architecture
✔ Zero-touch autonomous operations
✔ Industry-leading sustainability
The FPR4K-NM-4X40G represents the pinnacle of 40G security technology, while the next-generation FPR4K-NM-4X100G redefines network security with 100G interfaces, quantum-safe encryption, and autonomous operations. This evolution demonstrates Cisco's leadership in developing security solutions that meet the demands of tomorrow's hyper-connected world.
A: 160Gbps aggregate throughput 120Gbps firewall throughput with full inspection 80Gbps IPS/IDS throughput
A: 120Gbps firewall throughput with full inspection 80Gbps IPS/IDS throughput 60Gbps encrypted traffic inspection
A: 80Gbps IPS/IDS throughput 60Gbps encrypted traffic inspection ✔ Latency: <5 microseconds (hardware bypass mode)
A: 60Gbps encrypted traffic inspection ✔ Latency: <5 microseconds (hardware bypass mode) ✔ Compatibility: All Firepower 4100 models (4110 through 4140)