Cisco HWIC-4T 4 Port Expansion Module
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Cisco HWIC-4T 4 Ports Expansion Module High-Speed WAN Refurbished

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Part Number#: HWIC-4T
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Short Description:
HWIC-4T 4 Ports Serial High-Speed WAN Interface Card 4 x Synchronous /Asynchronous Serial WAN (HWIC) Expansion Module | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Overview of the Cisco HWIC-4T 4 Ports Expansion Module

The Cisco HWIC-4T is an Expansion Module designed to enhance the Wide Area Network (WAN) capabilities of compatible Cisco devices. Specifically, it introduces 4 ports for both Synchronous and Asynchronous Serial WAN connections. This expansion module caters to the need for high-speed data transmission, making it an ideal choice for businesses and organizations with demanding networking requirements.

High-Speed Data Transfer

The standout feature of the Cisco HWIC-4T is its high-speed data transfer capability. With four serial ports dedicated to WAN connectivity, this interface card ensures efficient and rapid data exchange, catering to the demands of modern networking applications.

Versatility in Serial Communication

The inclusion of both synchronous and asynchronous serial communication options adds a layer of versatility to the HWIC-4T. This flexibility allows organizations to tailor their network configurations based on specific requirements, enhancing overall operational efficiency.

Expansion Module

As an expansion module, the Cisco HWIC-4T can be seamlessly integrated into existing networking infrastructure. This modular approach simplifies upgrades and expansions, providing a cost-effective solution for businesses looking to scale their network capabilities. The HWIC-4T is designed as an expansion module, seamlessly integrating with compatible Cisco routers and switches. This compatibility ensures easy installation and integration into existing network infrastructures, making it a cost-effective solution for organizations looking to expand their connectivity capabilities.

High-Speed WAN Connectivity

One of the standout features of the Cisco HWIC-4T is its ability to provide high-speed Wide Area Network (WAN) connectivity. The four ports allow for simultaneous and rapid data transfer, optimizing network performance and reducing latency. This is particularly advantageous for businesses that rely on real-time data processing and seamless communication.

Synchronous Serial Communication

Synchronous serial communication is a method where data is transmitted in a continuous stream, synchronized by a clock signal. The Cisco HWIC-4T's support for synchronous communication ensures reliable and efficient data transfer, critical for applications requiring precise timing and coordination.

Asynchronous Serial Communication

In contrast, asynchronous serial communication involves sending individual characters without a shared clock signal. This flexibility makes the HWIC-4T suitable for a wide range of applications, accommodating devices with different transmission speeds and varying requirements.

Benefits of Cisco HWIC-4T High-Speed WAN Interface CardScalability

The modular design of the HWIC-4T ensures scalability. As business needs evolve, additional cards can be added to existing routers, allowing for seamless expansion without the need for a complete overhaul of the networking infrastructure.


The ability to support both synchronous and asynchronous serial communication makes the HWIC-4T a versatile solution. It can adapt to a wide range of networking scenarios, providing businesses with the flexibility they need.


Cisco is renowned for producing reliable networking equipment, and the HWIC-4T is no exception. Its robust design and seamless integration with Cisco routers contribute to a dependable networking solution.

Cost-Effective Expansion

Instead of investing in entirely new routers to accommodate growing networking demands, businesses can opt for the HWIC-4T as a cost-effective expansion solution. This not only saves on capital expenditures but also minimizes downtime associated with major hardware upgrades.

Use Cases and ApplicationsMulti-Site Connectivity

The Cisco HWIC-4T is particularly well-suited for organizations with multiple geographically dispersed locations. The four serial ports enable simultaneous connections to various sites, facilitating secure and reliable communication across the entire network.

Data-Intensive Applications

In environments where data-intensive applications are the norm, such as video conferencing or large-scale file transfers, the high-speed data transfer capabilities of the HWIC-4T come to the fore. This ensures a seamless user experience and minimizes latency.

Network Scalability

Scalability is a crucial consideration for growing businesses. The modular design of the HWIC-4T allows for easy expansion, ensuring that the network can evolve alongside the organization's changing needs without requiring a complete overhaul of existing infrastructure.

High Performance

The HWIC-4T Cisco 4 Ports Serial High-Speed WAN Interface Card (WIC) is designed to provide high performance in a wide variety of serial-based WAN technologies. Some key features that contribute to its performance include:

  • High-speed serial ports: The card has four serial ports that support data rates up to 2.048 Mbps, which provides high-speed connectivity for serial-based WAN technologies such as T1, E1, ISDN, and others.
  • Quality of Service (QoS): The card supports QoS features such as traffic shaping, congestion management, and priority queuing that help optimize network performance and ensure that mission-critical data is transmitted without delay.
  • Data compression: The card supports data compression, which reduces the amount of bandwidth required for data transmission, resulting in increased network efficiency.
  • Advanced security features: The card supports advanced security features such as access control lists (ACLs) and encryption, which help to protect the network from unauthorized access and attacks.
  • Compatibility: The card is compatible with a variety of Cisco routers, including the Cisco 1841, 2800, and 3800 series routers, which allows for easy integration into existing networks.
  • Easy management: The card is manageable via web interface, CLI, or SNMP, which makes it easy to configure the card.
Exceptional Reliability

The HWIC-4T Cisco 4 Ports Serial High-Speed WAN Interface Card (WIC) is designed to provide high reliability in a wide variety of serial-based WAN technologies. Some key features that contribute to its reliability include:

  • Industrial-grade design: The card is built to withstand extreme temperatures, vibration, and humidity, making it suitable for use in harsh industrial environments.
  • Redundant power inputs: The card has redundant power inputs that ensure that the card remains operational even if one of the power inputs fails.
  • Industrial-grade components: The card is built with industrial-grade components that are designed to withstand harsh environments and provide long-term reliability.
  • Automatic failover: The card supports automatic failover, which ensures that network traffic is rerouted in the event of a failure, minimizing downtime.
  • Advanced security features: The card supports advanced security features such as access control lists (ACLs) and encryption, which help to protect the network from unauthorized access and attacks.
  • Fault-tolerant features: The card supports advanced fault-tolerant features such as Link Aggregation Control Protocol (LACP) and Rapid Spanning Tree Protocol (RSTP) that enhance network availability and reduce downtime.
  • Reliability Monitoring: The card has a built-in reliability monitoring feature that allows network administrators to monitor the card's performance and detect any potential issues before they become critical.
General Information of the Cisco HWIC-4T Expansion Module
  • Manufacturer: Cisco
  • Part Number or SKU# HWIC-4T
  • Product Type: Expansion Module
Technical Information for 4 Ports Expansion Module
  • Application/Usage: Wide Area Network
  • Form Factor: Plug-in module-WAN Interface Card
Interfaces/Ports of WAN Interface Card
  • Interfaces/Ports: 4 x Synchronous /Asynchronous Serial WAN
  • Interfaces/Ports Details: 4 x Smart Serial Asynchronous/Synchronous Serial WAN

Management & Protocols

  • Data Link Protocol: HDLC, RS-232, PPP, RS-530, X.21, V.35, RS-449, SLIP, RS-530A
  • Data Transfer Rate: 8 Mbps

In general, the Cisco HWIC-4T stands as a robust solution for organizations seeking to expand their network capabilities with high-speed serial connectivity. Its versatile design, support for both synchronous and asynchronous connections, and compatibility with various Cisco devices make it a valuable asset in diverse networking scenarios. Whether used in enterprise settings, by service providers, or in industrial applications, the HWIC-4T contributes to a more efficient and responsive network infrastructure.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

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