| Product Type | Modular expansion base |
| Form Factor | Rack-mountable, Desktop |
| Rack Units | 4U |
| Weight | 11.24 lbs |
| Power Supply | Internal power supply (not installed) |
| Power Redundancy | Yes |
| Max Power Supplies Supported | 2 |
| Connectivity Technology | Wired |
| QoS Support | Yes |
Cisco ASR 903 Series Router Chassis, TAA Compliant, Rack-Mountable, 4U

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.
- Scalable modular chassis accommodates up to eight modules, ensuring long-term investment protection
- Comprehensive global compliance certifies the unit for deployment in tightly regulated industries
- Power redundancy support enhances uptime, critical for enterprise and service provider networks
Product Overview
The Cisco ASR 903 Series Router Chassis is a modular expansion base designed for flexible deployment, supporting desktop and rack-mount installations in a 4U chassis. It includes six expansion slots (supporting up to 8 modules) and features Quality of Service (QoS) capabilities essential for enterprise-grade traffic prioritization. With TAA compliance and a broad set of safety and electromagnetic compatibility standards, the chassis is built for critical environments. Power redundancy support further enhances reliability, making it ideal for high-availability applications.
Specifications
Product Overview
Physical & Environmental
| Dimensions (W x D x H) | 17.4 in x 9.2 in x 5.2 in |
| Width | 17.4 in |
| Depth | 9.2 in |
| Height | 5.2 in |
| Humidity Range Operating | 5 - 95% (non-condensing) |
Cloud Management & Licensing
| Cloud Management Support | Available via Cisco EPN Manager (optional) |
| Licensing Model | Requires Smart Licensing for advanced features |
Additional Specifications
| Module Slots (Total) | 8 |
| Module Slots (Population) | 0 installed |
| Hot-Swappable Components | Yes, depending on module configuration |
| Management Ports | Available via installed modules |
| LED Indicators | Yes |
| Fan Redundancy | Dependent on installed power supplies and modules |
| Redundant System Design | Yes (power, control plane, and forwarding) |
| Chassis Cooling | Front-to-back airflow (dependent on module configuration) |
| Mounting Kit | Optional rack-mount kit available |
| Serviceability | Modular for field replaceability |
| Lifecycle Support | Cisco Enhanced Limited Lifetime Warranty (ELLW) |
| Target Network Segment | Carrier Ethernet, Metro Aggregation, Enterprise Wide-Area Edge |
| Platform Software Compatibility | Cisco IOS XE |
Interfaces
| Expansion Slots | 6 (free) / 6 (total) |
| Additional Expansion Support | Supports up to 8 modules |
Compliance & Origin
| TAA Compliant | Yes |
| Country of Origin | Mexico |
| Compliant Standards | NEBS level 3, ETSI, CISPR 22 Class A, CISPR 24, EN 61000-3-2, VCCI Class A ITE, EN 61000-3-3, EN55024, EN50082-1, EN 61000-6-1, AS/NZS 60950-1, EN 61000-4-4, EN 61000-4-2, EN 61000-4-3, EN 61000-4-6, ICES-003 Class A, EN 61000-4-5, EN 61000-4-11, FCC CFR47 Part 15, EN 61000-4-8, UL 60950-1 Second Edition, CAN/CSA C22.2 No. 60950-1-07, EN 60950-1 Second Edition, IEC 60950-1 Second Edition, EN 50121-4, EN 55022 Class A, EN 300 386 |
Advanced Security Features
| Integrated Security Capabilities | Supports MACsec and control-plane protection (CPP) |
| Secure Boot | Yes |
| Control Plane Policing (CoPP) | Supported |
| Traffic Encryption | MACsec supported on supported modules |