CISCO 73-4075-A0 Network Interface Card 73-4075-05-A0

( Brand: Cisco ), ( Manufacturer Part Number: 73-4075-A0 ), ( Model: 73-4075-05-A0 ), ( Color: Black ), ( Unit Type: Unit ), ( Type: Industrial Computer Accessord Board )

Review CISCO Network Interface Card

The **Cisco 73-4075-A0 (and its variant, the 73-4075-05-A0)** is a high-performance, enterprise-grade **Network Interface Card (NIC)** designed to deliver exceptional data throughput, reliability, and flexibility for modern networking environments. Part of Cisco s robust line of server and workstation adapters, this dual-port **10 Gigabit Ethernet** card leverages cutting-edge technology to ensure seamless connectivity, low latency, and optimal performance for demanding applications such as virtualization, cloud computing, high-speed data transfer, and enterprise storage solutions. Engineered with **Cisco s proven quality and compatibility**, this NIC is built to integrate effortlessly with a wide range of Cisco and third-party servers, including those from Dell, HP, and Lenovo, making it an ideal choice for IT administrators seeking both performance and ease of deployment.

The **73-4075-A0** and its **05-A0 variant** (which may include slight firmware or driver updates for enhanced compatibility) feature **two independent 10 Gigabit Ethernet ports**, enabling high-speed, full-duplex communication with minimal packet loss. Each port supports **TCP/IP, IPv4, IPv6, and advanced offloading capabilities**, including **TCP Segmentation Offload (TSO), Large Receive Offload (LRO), and Checksum Offload**, which significantly reduce CPU load and improve overall system efficiency. These features are particularly beneficial in virtualized environments where multiple virtual machines compete for bandwidth, as they help maintain consistent performance even under heavy workloads. Additionally, the card supports **Cisco s Virtual Networking (VIC) and Flexible Networking** technologies, allowing for dynamic allocation of network resources and simplified management of complex multi-tenant deployments.

Built with **enterprise-grade durability**, the **73-4075-A0** is housed in a rugged, low-profile design that ensures stable operation in high-density server racks while minimizing heat generation. The card is compatible with **PCIe 3.0 x8 interfaces**, providing ample bandwidth for sustained 10 Gbps performance without bottlenecks. Its **low-power consumption** and **energy-efficient design** make it an eco-friendly choice for data centers looking to optimize operational costs while maintaining peak performance. The inclusion of **Cisco s advanced driver support** ensures compatibility with major operating systems, including **Windows Server, Linux, and VMware ESXi**, further enhancing its versatility for mixed-environment deployments.

For organizations prioritizing **scalability and future-proofing**, the **73-4075-A0** serves as a reliable foundation for expanding network infrastructure. Whether deployed in **high-performance computing (HPC) clusters, storage area networks (SANs), or data-intensive applications**, this NIC delivers the speed, reliability, and adaptability required to meet evolving business demands. With Cisco s reputation for innovation and dependability, this network interface card is not merely a component but a strategic investment in a network s long-term efficiency and growth.

### **Pros and Cons of buying a Cisco 73-4075-A0 (73-4075-05-A0) Network Interface Card (NIC)**

1. **Compatibility with Cisco Switches** This NIC is designed specifically for Cisco Catalyst 9300/9400/9500 series switches, ensuring seamless integration and optimal performance in Cisco ecosystems.

2. **High Performance** Built with advanced hardware, it supports high-speed data transfer, low latency, and efficient packet processing, which is crucial for enterprise networks.

3. **Reliability and Durability** Cisco networking components are known for their robustness, reducing the risk of failures in mission-critical environments.

4. **Future-Proofing** The NIC supports modern networking standards, including PoE (Power over Ethernet) and advanced management features, making it suitable for evolving network needs.

5. **Warranty and Support** Cisco offers enterprise-grade warranty and technical support, ensuring long-term reliability and assistance if issues arise.

6. **Security Features** Designed with security in mind, it helps enforce network policies, reduce vulnerabilities, and support advanced threat mitigation.

7. **Compatibility with Cisco StackWise and StackPower** If used in a Cisco stackable environment, it can leverage features like centralized management and power distribution efficiently.

8. **Low Latency and High Throughput** Ideal for applications requiring real-time data processing, such as VoIP, video conferencing, or high-speed data transfers.

1. **High Cost** Cisco networking hardware is premium-priced, making it a significant investment compared to generic or third-party NICs.

2. **Vendor Lock-In** Since it is Cisco-specific, replacing or upgrading may require sticking with Cisco products, limiting flexibility if switching vendors in the future.

3. **Limited Availability** As a specialized component, it may not be as widely stocked as generic NICs, potentially leading to longer lead times or higher prices from authorized resellers.

4. **Complexity in Troubleshooting** Cisco s proprietary management tools (e.g., Cisco DNA Center, Prime Infrastructure) may require specialized knowledge, increasing IT overhead.

5. **Overkill for Small Networks** If deployed in a small or low-traffic network, the advanced features may be unnecessary, making the cost justification weaker.

6. **Potential for Obsolescence** While Cisco hardware is durable, newer models may introduce better features, leading to eventual upgrades and additional costs.

7. **Dependency on Cisco OS** Full functionality may require Cisco IOS or IOS-XE, which could be a limitation if migrating to other operating systems or open-source alternatives.

8. **No Direct Consumer Support** Unlike consumer-grade NICs, support is typically through enterprise channels, which may involve longer response times for non-critical issues.

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### **Conclusion**

The **Cisco 73-4075-A0 (73-4075-05-A0) NIC** is a high-performance, enterprise-grade component ideal for **Cisco-centric networks** requiring reliability, security, and scalability. It excels in environments where **low latency, high throughput, and seamless integration with Cisco switches** are priorities such as data centers, large enterprises, or networks with demanding applications (e.g., VoIP, video streaming, or cloud connectivity).

However, its **high cost, vendor lock-in risks, and complexity** make it less suitable for **small businesses, budget-conscious setups, or non-Cisco environments**. If your infrastructure is already built on Cisco hardware and you need **optimal performance and long-term support**, this NIC is a strong choice. For other use cases, a **generic high-speed NIC** (e.g., Intel or Broadcom-based) may offer better cost efficiency without sacrificing performance.

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### **Recommendation**

- You are **fully committed to a Cisco network stack** (switches, routers, management tools).

- Your environment requires **high reliability, security, and low-latency performance**.

- You have **enterprise-level IT support** to manage Cisco-specific tools.

- Budget constraints are not a major concern, and you prioritize **long-term compatibility**.

- You are **not using Cisco switches** or plan to diversify your vendor base.

- Your network is **small-scale or low-traffic**, making the cost unjustified.

- You prefer **open-standard or third-party solutions** for flexibility.

- You lack **dedicated IT resources** to manage Cisco s proprietary systems.

For most **small to mid-sized businesses** or **non-Cisco environments**, a **high-quality generic NIC** (e.g., Intel X550-T2, Broadcom BCM5719) may provide **similar performance at a lower cost** while avoiding vendor lock-in. However, if **Cisco interoperability and enterprise-grade support** are non-negotiable, this NIC remains a **premium but justified investment**.

Details:

The CISCO 73-4075-05-A0 Network Interface Card, part number 73407504A0, is a high-performance PC board designed for enhancing connectivity and data transfer speeds in network infrastructures. Although this model has been discontinued by the manufacturer, it remains a reliable solution for existing systems.

part #: 734075a0 prices

• $145.00-$665.65

specifications automationjack:

• brand: Cisco
• mpn: 73-4075-a0
• model: 73-4075-05-a0
• color: Black
• unit type: Unit
• type: Industrial Computer Accessord Board

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• paid by: Buyer
• time: 30 Days
• method: Money back

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• cost: $10.15

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• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
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• started: April 15, 2026
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• # reviews: 4204
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