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ASA5555-CU-2AC-K9
ASA 5555-X WITH SW 14GBE DATA 1GBE MGMT 2AC 3DES/AES
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ASA5555-CU-2AC-K9 is a high-performance, rack-mounted security appliance engineered for demanding enterprise and branch office environments. It delivers robust firewall capabilities with advanced throughput performance, configurable LAN/WAN and SFP interfaces, and a dual AC power supply that ensures uninterrupted operation with built-in redundancy. The appliance is designed to support a wide range of security services including IPS, antivirus, web filtering, and VPN, making it an ideal choice for organizations that require comprehensive protection in a scalable form factor.
ASA5555-CU-2AC-K9 also features flexible management and deployment options, including centralized configuration via cloud, CLI, GUI, REST API, and SNMP, catering to SMB to large enterprise use cases. With high availability options such as Active-Passive clustering, the unit is optimized for modern network security demands, providing a resilient, scalable solution that safeguards mission-critical applications and network infrastructures.
ASA5555-CU-2AC-K9 price is $17,345.00, a 44.9% saving from the Cisco list price of $31,495.00. ASA5555-CU-2AC-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ASA5555-CU-2AC-K9 for additional pricing. Browse the full Asa 5500 Series Business Edition Bundles series or explore all Cisco products.
In a global enterprise headquarters with high-volume Internet traffic, the ASA5555-CU-2AC-K9-ASA 5555-X (14×GbE data, 1×GbE mgmt, 3DES/AES) enforces unified threat management, IPS and SSL VPN termination at multi-gigabit speeds. By integrating hardware-accelerated encryption and advanced malware protection, IT teams block zero-day attacks, ensure GDPR compliance and maintain 99.99% uptime. Benefit: Scalable perimeter security that reduces breach risk while preserving application performance.
In a distributed data center serving SaaS applications, the ASA5555-X’s 14GbE interfaces enable micro-segmentation between database clusters, application tiers and DMZ zones. Leveraging deep packet inspection, 3DES/AES hardware crypto and dual-AC redundancy, operations achieve strict east-west firewall enforcement without latency spikes. Benefit: Granular access control and threat isolation, increasing resilience against lateral malware spread and simplifying PCI DSS audits.
For a multinational retailer with 500 branch locations, the ASA5555-X consolidates IPsec site-to-site VPN tunnels and client SSL VPN access on a single platform. With hardware crypto acceleration, active/active AC power supplies and 1GbE management, network teams provision hundreds of secure tunnels at wire-rate throughput. Benefit: Centralized policy enforcement, end-to-end encryption and 24×7 branch uptime, driving operational efficiency and consistent customer experience.
To get the detailed certification, please go to the Compliance Center.
 ASA5555-CU-2AC-K9 |  ASA5555-DC-K8 |  ASA5515-K9 |  ASA5585-S60-2A-K8 |  ASA5585-S40-K9 | |
|---|---|---|---|---|---|
| Architecture | Rack-mount | Rack-mount | Rack-mount | Chassis | Chassis |
| Centralized Configuration & Reporting | Yes | Yes | Cisco ASDM / Cisco Security Manager | Cloud / CLI / GUI / REST API / SNMP | Supported |
| Concurrent Sessions | 500000 | 500,000 | 250,000 | N/A | 1,000,000 |
| Deployment Type | Enterprise / Branch Office | Enterprise / Branch Office | Enterprise / Branch Office | Enterprise / Data Center | Enterprise / Data Center |
| Depth | 18.5 inches | 18 inches | 18 inches | N/A | N/A |
| Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
| Expansion Slots | SFP | SFP | N/A | SFP | SFP |
| Feature | High Performance, Scalable, and Clustering Options | Integrated Security, Advanced Threat Protection | Next-Generation Firewall | High availability, clustering | IPS, Antivirus, Web Filtering, VPN |
| Firewall Layer Supported | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 |
| Firewall Policies Supported | 200 | 200 | N/A | N/A | N/A |
| Firewall Throughput | 5 Gbps | 10 Gbps | 450 Mbps | 60 Gbps | 40 Gbps |
| Flash Storage | 128 GB | 128 GB | 8 GB | 128 GB SSD | 128 GB |
| Form Factor | 1 RU | 2 RU | 1 RU | Chassis | Chassis |
| Height | 1.8 inches | 4.5 inches | 1.75 inches | N/A | N/A |
| High Availability | Active-Passive | Active-Active | Active-Passive | Active-Passive | Active-Passive |
| IPS Throughput | 2 Gbps | 5 Gbps | 200 Mbps | N/A | N/A |
| Integrated I/O | 8 | 8 | N/A | N/A | N/A |
| Interfaces | RJ-45 / SFP | RJ-45 / SFP+ | RJ-45 / SFP | RJ-45 / SFP | RJ-45 / SFP |
| LAN Ports | 8 LAN Ports | 8 LAN Ports | 8 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Logging & Monitoring | Built-in | Built-in / Syslog | Built-in / Syslog | Built-in / Syslog | Built-in / Syslog |
| Management Options | Cloud / CLI / GUI / Centralized / REST API / SNMP | Cloud / CLI / GUI / Centralized / REST API / SNMP | CLI / GUI / SNMP | Cloud / CLI / GUI / REST API / SNMP | Cloud / CLI / GUI / Centralized / REST API / SNMP |
| Maximum Concurrent Sessions | 1000000 | 1,000,000 | 250,000 | N/A | 1,000,000 |
| Memory | 8 GB | 16 GB | 4 GB | 16 GB | 8 GB |
| New Sessions Per Second | 20000 | 50,000 | 20,000 | N/A | N/A |
| POE Ports | No | No | No | No | No |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | ASA5555-CU-2AC-K9 | ASA5555-DC-K8 | Cisco ASA5515-K9 | ASA5585-S60-2A-K8 | Cisco ASA5585-S40-K9 |
| Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
| Rack Units | 1 RU | 2 RU | 1 RU | 4 RU | 2 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| Routing Protocols Supported | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing |
| Security Services | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | IPS / Antivirus / Web Filtering / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN |
| Supported Applications | 250 | 50 | 128 | N/A | N/A |
| Supported VPN Types | IPSec / SSL VPN / L2TP | IPSec / SSL VPN | IPSec / SSL VPN / L2TP | IPSec / SSL VPN | IPSec / SSL VPN / L2TP / PPTP / GRE |
| Switch Ports | Yes | Yes | No | No | No |
| Threat Protection Throughput | 3 Gbps | 6 Gbps | 400 Mbps | N/A | N/A |
| Use Case | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM |
| Users Supported | Unlimited | 50,000 | 250,000 | N/A | N/A |
| Users/Nodes | Unlimited | Unlimited | Unlimited | N/A | Unlimited |
| VPN Throughput | 1.5 Gbps | 7 Gbps | 250 Mbps | 10 Gbps | 40 Gbps |
| WAN Ports | 2 WAN | 4 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 20 lbs | 25 lbs | 14 lbs | N/A | N/A |
| Width | 17.3 inches | 17 inches | 17 inches | N/A | N/A |
ASA 5555-X CU dual AC provides high throughput and consistent firewall protection.
Professional-grade appliance with reliable enterprise performance.
Handles high-demand traffic efficiently and securely.
Durable and dependable for mission-critical operations.
Easy deployment with stable operation and minimal downtime.
The Cisco ASA 5555-X (SKU ASA5555-CU-2AC-K9) is a next-generation firewall appliance offering 14 GbE data ports, one 1 GbE management port, dual AC power supplies, and hardware-accelerated 3DES/AES encryption.
The ASA 5555-X delivers up to 6 Gbps of firewall throughput and up to 1 Gbps of IPsec VPN throughput, ensuring high-performance security for medium-to-large enterprises.
The ASA 5555-X supports up to 4 million concurrent sessions, allowing it to handle large user bases and intensive application traffic without performance degradation.
This ASA model supports up to 500 site-to-site IPsec VPN tunnels and up to 250 SSL VPN peers, providing flexible remote-access and branch-office connectivity.