CISCO 73-3904-11 Plc Modules

( Brand: Cisco ), ( Manufacturer Part Number: 73-3904-11 ), ( Part Type: Module )

Review CISCO 73390411 Used

The **Cisco 73-3904-11 (73390411)** is a high-performance, enterprise-grade **Cisco Catalyst 9300 Series 48-Port Gigabit Ethernet SFP Switch**, designed to deliver advanced networking capabilities for modern data centers, branch offices, and campus environments. This switch is part of Cisco s next-generation Catalyst 9000 family, engineered to provide seamless scalability, enhanced security, and intelligent automation to support the demands of today s dynamic IT infrastructures. With a **48-port Gigabit Ethernet** interface, it offers robust connectivity options while maintaining high throughput and low latency, making it ideal for applications requiring reliable, high-speed data transmission. Each port supports **SFP (Small Form-factor Pluggable) transceivers**, enabling flexible connectivity with a wide range of fiber and copper-based media, including multimode and single-mode fiber, as well as copper-based solutions like 1000BASE-T. The switch is built on Cisco s **IOS XE operating system**, which ensures compatibility with advanced features such as **Cisco StackWise-160**, allowing for seamless stacking of up to nine switches for simplified management and improved redundancy. This feature enhances fault tolerance and simplifies network administration by consolidating multiple devices into a single logical unit. Security is a cornerstone of this switch, equipped with **Cisco TrustSec**, **Dynamic ARP Inspection (DAI)**, **Port Security**, and **MACsec encryption**, which collectively protect against unauthorized access, ARP spoofing, and other common network threats. The switch also supports **Quality of Service (QoS)** mechanisms, ensuring prioritized traffic for voice, video, and critical applications to maintain optimal performance. Additionally, it integrates with **Cisco DNA Center**, enabling centralized management, automated policy enforcement, and real-time monitoring through intuitive dashboards and AI-driven insights. The **Cisco Catalyst 9300 Series** is designed with energy efficiency in mind, featuring **Cisco EnergyWise** technology to monitor and optimize power consumption across connected devices, reducing operational costs while minimizing environmental impact. The compact yet robust chassis is built to withstand demanding environments, with support for **fan redundancy** and **hot-swappable power supplies** for uninterrupted operation. Whether deployed in a high-density data center, a branch office, or a campus network, the **Cisco 73-3904-11** delivers a blend of performance, security, and scalability, making it a versatile and future-proof solution for enterprises seeking to build resilient and high-performance networks.

The Cisco 73-3904-11 (also known as the **Cisco Catalyst 9300 Series 48-Port 10G Base-T and 4-Port 10G SFP Managed Switch**) is a high-performance enterprise switch designed for modern networks requiring scalability, security, and advanced features. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Cisco 73-3904-11**

1. **High Performance and Scalability**

- Supports **48 x 10G Base-T ports** (RJ-45) and **4 x 10G SFP ports**, making it ideal for high-bandwidth environments such as data centers, branch offices, or campus networks.

- Provides **non-blocking switching fabric** with up to **1.088 Tbps** of throughput, ensuring minimal latency and efficient data transfer.

- Supports **StackWise-160 technology**, allowing up to **9 switches** to be stacked for centralized management and increased capacity.

2. **Advanced Security Features**

- Built-in **Cisco TrustSec** for role-based access control (RBAC) and micro-segmentation.

- **Cisco DNA Assurance** for real-time monitoring, troubleshooting, and automated remediation of network issues.

- **Secure boot and image signing** to prevent unauthorized firmware changes.

- **DDoS protection** and **MACsec encryption** for secure data transmission.

3. **Modern Networking Capabilities**

- Full support for **Cisco DNA Center** integration, enabling automated provisioning, policy enforcement, and intent-based networking.

- **Quality of Service (QoS)** prioritization for voice, video, and critical applications.

- **Multigigabit Ethernet (mGig) support** (via SFP modules) for future-proofing with Wi-Fi 6 access points.

- **Power over Ethernet Plus (PoE )** support (via compatible modules) for powering IP phones, cameras, and wireless access points.

4. **Reliability and Redundancy**

- **Hot-swappable power supplies and fans** for uninterrupted operation during maintenance.

- **Redundant management interfaces** (Console, SSH, SNMP, CLI, and web-based GUI).

- **LACP (Link Aggregation Control Protocol)** for high availability and load balancing.

5. **Energy Efficiency**

- **Cisco EnergyWise** technology helps reduce power consumption in large deployments.

- **Fanless design** in some models (depending on configuration) reduces operational noise and cooling requirements.

6. **Compatibility and Ecosystem**

- Part of the **Cisco Catalyst 9300 family**, which is widely deployed in enterprise networks, ensuring compatibility with existing Cisco infrastructure.

- Supports **VLANs, IPv6, MPLS, and advanced routing protocols** (OSPF, EIGRP, BGP).

- Works seamlessly with **Cisco Meraki, Aironet, and other Cisco ecosystem devices**.

7. **Long-Term Support and Warranty**

- Cisco offers **standard 5-year limited hardware warranty** (extendable to 10 years with Cisco Smart Net Total Care).

- **Software updates and security patches** are provided for the lifetime of the switch (typically 10 years).

8. **Cost-Effective for Enterprise Deployments**

- While the upfront cost is high, its **lifespan, performance, and advanced features** make it cost-effective in the long run compared to cheaper, less capable switches.

- **Licensing flexibility** (e.g., Cisco DNA Advantage, DNA Essentials) allows organizations to pay only for the features they need.

---

### **Cons of the Cisco 73-3904-11**

1. **High Upfront Cost**

- The **price is significantly higher** than entry-level or mid-range switches (e.g., Cisco Catalyst 2960-X or 3850).

- Licensing (e.g., Cisco DNA Essentials or Advantage) adds to the total cost of ownership (TCO).

2. **Complexity for Small Businesses or Non-Enterprise Users**

- The **advanced features (DNA Center, TrustSec, etc.)** may be **overkill** for small businesses, home offices, or simple LAN setups.

- Requires **technical expertise** to configure and manage effectively, which may not be feasible for non-IT staff.

3. **Power and Space Requirements**

- **Power consumption is higher** than smaller switches (up to ** 200W** depending on configuration), requiring adequate PDU capacity.

- **Physical footprint** is larger, which may be a constraint in space-limited environments.

4. **Licensing Model Can Be Confusing**

- Cisco s **perpetual licensing model** (e.g., DNA Essentials) can be **expensive** if not all features are utilized.

- Some features (e.g., advanced security, automation) **require additional licenses**, increasing costs.

5. **Limited Port Density for Some Use Cases**

- While it has **48x 10G ports**, some deployments (e.g., small offices) may not need this many high-speed ports.

- **No 1G or 2.5G ports** by default, which could be a drawback if backward compatibility is needed.

6. **Dependency on Cisco Ecosystem**

- If migrating from a **non-Cisco network**, integration may require additional configuration and potential compatibility issues.

- **Third-party vendor support** (e.g., for non-Cisco devices) may not be as seamless.

7. **Potential Overkill for Basic Networking Needs**

- If the primary use case is **simple LAN switching** (e.g., connecting PCs, printers, and basic devices), a **cheaper switch (e.g., Cisco 3850 or 2960-X)** may suffice.

- Features like **DNA Center integration** are unnecessary for most small networks.

8. **Resale Value Depreciation**

- Like most enterprise hardware, the **resale value depreciates quickly**, so it may not be ideal for budget-conscious buyers expecting to upgrade frequently.

---

### **Conclusion**

The **Cisco 73-3904-11** is a **premium enterprise-grade switch** designed for **high-performance, secure, and scalable networks**. It excels in environments where **advanced features like automation, security, and high-speed connectivity** are critical. However, its **high cost, complexity, and overkill nature for small networks** make it less suitable for budget-conscious or simple deployments.

For **large enterprises, data centers, or organizations adopting Cisco DNA Center**, this switch is an **excellent investment** due to its **longevity, performance, and future-proofing**. For **small businesses, home offices, or basic LAN setups**, a **lower-cost alternative (e.g., Cisco 3850, 2960-X, or even non-Cisco switches like Ubiquiti or HP)** may be more practical.

---

### **Recommendation**

- You are deploying a **modern enterprise network** with **high-speed requirements (10G )**.

- You need **advanced security (TrustSec, MACsec), automation (DNA Center), or scalability (StackWise-160)**.

- Your organization is **already invested in Cisco infrastructure** and requires seamless integration.

- You plan to **future-proof your network** with **PoE , mGig, and high availability**.

- You are running a **small business, home office, or simple LAN** where a **cheaper switch** (e.g., Cisco 2960-X, 3850) would suffice.

- You **lack IT expertise** to manage advanced features like DNA Center or TrustSec.

- Your budget is **limited**, and you can achieve similar results with **non-Cisco alternatives** (e.g., Ubiquiti USW-Flex, HP Aruba 2930).

- You **do not need 10G ports** and could work with **1G or 2.5G switches** for cost savings.

For **enterprise-grade deployments**, the **Cisco 73-3904-11 is a top-tier choice** that justifies its cost with **performance, security, and scalability**. For **smaller or simpler networks**, exploring **more affordable alternatives** would be a **more cost-effective decision**. Always align the purchase with your **specific networking needs** to avoid overspending.

Details:

CISCO 73-3904-11 / 73390411 USED MOTHERBOARD, CIRCUIT CARD ASSEMBLY, MAIN SYSTEM BOARD, NETWORK HUB. All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. Sells new and surplus product develops channels to purchase such.

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: 73390411 prices

• $116.21-$183.14

specifications sensoindustria:

• brand: Cisco
• mpn: 73-3904-11
• part type: Module

general sensoindustria:

• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules
• condition: Used

payments sensoindustria:

• credit card: Diners-club
• other
• wallet: Google-pay

offer sensoindustria:

• quantity: 1
• options: Ship-to-home
• started: March 2, 2026
• sold: 0
• availability: In Stock

returns sensoindustria:

• method: Money back
• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

seller sensoindustria:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 192455
• rating: 99.6%

shipping sensoindustria:

• service: Standard
• type: Fixed
• transit: 30-34 Days
• class: Standard
• cost: $12.90

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