| Manufacturer | Cisco | 
| Product Name | Cisco Firepower 4125 ASA Appliance | 
| Manufacturer Part Number | FPR4125-ASA-K9 | 
| UPC | 889728223362 | 
| Device Type | Security appliance | 
| Form Factor | Rack-mountable - 1U | 
| Height (Rack Units) | 1U | 
| Hard Drive Capacity | 800 GB | 
| Power Requirements | AC 120/230 V (50 - 60 Hz) | 
| Power Provided | 1100 Watt | 
| Power Redundancy | Optional | 
| Power Device | Internal power supply - hot-plug | 
| Bundled Components | 2 x NetMod Bays | 
| Connectivity Technology | Wired | 
| Max Supported Power Supplies | 2 | 
Cisco Firepower 4125 ASA Appliance, 1U, 2 x NetMod Bays

Key Benefits
 
            
            AI-Powered Summaries from Online Customer Reviews
Eye-Insights™ are generated by proprietary AI that analyzes real online customer reviews to highlight top pros and key product features. While we aim for accuracy, insights are provided “as-is” and individual results may vary.
- Designed for enterprise-scale scalability with support for 200,000 new connections/sec and 15 million concurrent sessions
- Modular platform with 2 NetMod bays, 8x10Gb SFP+ ports enabling flexible deployments and upgrades
- Maximum firewall throughput of 40 Gbps meets the demands of high-traffic, latency-sensitive environments
Product Overview
The Cisco Firepower 4125 ASA Appliance is engineered for high-end enterprise-level security with a focus on performance, scalability, and visibility. Housed in a compact 1U rack-mountable chassis, this appliance features two NetMod expansion bays for flexible port configuration. Designed for powerful traffic inspection, the unit delivers a maximum throughput of 40 Gbps for firewall with AVC and up to 35 Gbps with full threat protection including IDS/IPS services. It supports up to 200,000 new connections per second and 15 million concurrent connections, making it ideal for high-demand environments such as data centers or large campuses.
Connectivity is optimized through eight 10Gb SFP+ Ethernet interfaces, one management port, and additional USB and RJ-45 interfaces. Its support for VLANs, clustering, high availability, and application visibility helps enhance resiliency and control. With optional power redundancy and internal hot-plug power supplies rated at 1100W, the system maintains critical uptime while operating within a wide environmental tolerance (32 – 104 °F, 5–95% humidity). Certified to meet a wide range of international standards, the Firepower 4125 ASA complies with TAA and is suitable for government and regulated industries requiring compliance.
Specifications
                      Product Overview
                      
                    
                    
                      Physical & Environmental
                      
                    
                    | Width | 16.9 in | 
| Depth | 29.7 in | 
| Height | 1.7 in | 
| Min Operating Temperature | 32 °F | 
| Max Operating Temperature | 104 °F | 
| Operating Humidity Range | 5 - 95% (non-condensing) | 
                      Cloud Management & Licensing
                      
                    
                    | High Availability Support | Yes | 
| Clustering Support | Yes | 
| Management Interface | Cisco Firepower Management Center (FMC) | 
                      Interfaces
                      
                    
                    | 10Gb Ethernet Ports (SFP+) | 8 | 
| Management Port | 1 x 1000Base-T (SFP, mini-GBIC) | 
| Serial Console Port | 1 x RJ-45 | 
| USB Ports | 1 x USB 2.0 Type A | 
| Expansion Slots | 2 (total) / 0 (free) | 
| Data Transfer Rate - NGIPS (1024B) | 41 Gbps | 
| Data Transfer Rate - NGIPS (450B) | 15 Gbps | 
| Data Transfer Rate - IPSec VPN | 14 Gbps | 
| Firewall Throughput FW + AVC (1024B) | 40 Gbps | 
| Firewall Throughput FW + AVC + IPS (1024B) | 35 Gbps | 
| Firewall Throughput FW + AVC (450B) | 13 Gbps | 
| Firewall Throughput FW + AVC + IPS (450B) | 9 Gbps | 
                      Compliance & Origin
                      
                    
                    | Country of Origin | Brazil / Mexico | 
| TAA Compliance | Yes | 
| Compliance Standards | CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, AS/NZS 60950-1, ICES-003 Class A, UL 60950-1, IEC 60950-1, EN 60950-1, GB 4943, VCCI Class A, KN24, KN22 Class A, FCC CFR47 Part 15 B Class A, and others | 
                      Advanced Security Features
                      
                    
                    | Application Visibility and Control (AVC) | Yes | 
| URL Filtering | Yes | 
| DDoS Protection | Yes | 
| VLAN Support | Yes | 
| Maximum Concurrent Connections | 15,000,000 | 
| New Connections per Second | 200,000 | 
 
              