Cisco WS-C3750X-12S-S Switch
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Cisco WS-C3750X-12S-S 12 Ports Layer 3 Switch Catalyst 3750X Refurbished

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Part Number#: WS-C3750X-12S-S
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Short Description:
WS-C3750X-12S-S Catalyst 3750X 12 x Gigabit Ethernet Expansion Slot 256 Megabytes (MB) Standard Memory 128 Megabytes (MB) Flash Memory Small Form-Factor Pluggable (SFP) Redundant Power Supply Supported Layer 3 Switch | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the Cisco WS-C3750X-12S-S 12 Ports Layer 3 Switch

The Cisco WS-C3750X-12S-S Catalyst 3750X stands out as a robust and feature-rich Layer 3 switch. Designed to meet the demands of modern networking environments, this switch offers advanced capabilities to enhance connectivity, performance, and reliability. The Cisco WS-C3750X-12S-S Catalyst 3750X is a member of the renowned Catalyst 3750X series, known for its advanced networking features and robust performance. This Layer 3 switch is specifically designed to enhance network efficiency and reliability.

Key Features of Catalyst 3750X SFP Switch

Gigabit Ethernet Expansion Slot

The WS-C3750X-12S-S boasts 12 Gigabit Ethernet expansion slots, providing ample connectivity options for various devices and ensuring high-speed data transfer within the network. This feature is crucial for accommodating the increasing data demands of today's applications.

Memory Specifications

To support efficient data processing, the switch is equipped with 256 Megabytes (MB) of standard memory and 128 Megabytes (MB) of Flash memory. This combination ensures smooth operation and responsiveness, even in demanding network environments.

Small Form-Factor Pluggable (SFP) Support

The inclusion of Small Form-Factor Pluggable (SFP) slots enhances the switch's versatility. SFP modules allow for different types of connections, such as fiber optic or copper, enabling users to tailor the switch to their specific networking requirements.

Redundant Power Supply

Ensuring uninterrupted operation is paramount in critical networking scenarios. The WS-C3750X-12S-S addresses this concern with its redundant power supply support, minimizing the risk of downtime due to power-related issues.

Layer 3 Switch Capabilities

As a Layer 3 switch, the WS-C3750X-12S-S goes beyond traditional Layer 2 functionality. It is capable of routing and making intelligent decisions based on IP addresses, optimizing data traffic, and enhancing network efficiency.

Powering Connectivity

The 12 Gigabit Ethernet expansion slots on the WS-C3750X-12S-S serve as the backbone for seamless communication within a network. These slots are strategically positioned to facilitate high-speed data transfer between connected devices, ensuring optimal performance for applications that demand substantial bandwidth.

In practical terms, these expansion slots enable the connection of various devices such as computers, servers, and other networking equipment. The Gigabit Ethernet standard, with its 1 Gbps data rate, accommodates the ever-growing demand for faster and more reliable data transmission.

Enhancing Processing Power

Memory plays a crucial role in the efficiency of any network device, and the WS-C3750X-12S-S excels in this aspect. With 256 Megabytes (MB) of standard memory, the switch can handle a considerable amount of data simultaneously. This is especially vital in environments with heavy data traffic or when managing a multitude of connected devices.

Additionally, the 128 Megabytes (MB) of Flash memory provides storage for the switch's operating system and essential files. This ensures quick and reliable boot-up times, minimizing delays in critical network operations.

Versatility in Connectivity

The WS-C3750X-12S-S is designed to accommodate various networking needs, and the inclusion of Small Form-Factor Pluggable (SFP) slots adds a layer of flexibility to its connectivity options. SFP modules are hot-swappable and support different types of connections, such as fiber optic or copper.

This flexibility allows users to adapt the switch to the specific requirements of their network infrastructure. Whether it's extending the reach of the network through fiber optics or utilizing copper connections for shorter distances, the SFP support ensures that the switch can be tailored to the unique demands of diverse networking environments.

Ensuring Reliability

Network downtime can have severe consequences for businesses and organizations. The WS-C3750X-12S-S addresses this concern by supporting redundant power supplies. In the event of a power supply failure, the backup power supply seamlessly takes over, preventing disruptions to network operations.

Redundancy is a key element in high-availability networking setups. The ability to maintain continuous operation, even in the face of hardware failures, enhances the reliability of the entire network infrastructure.

Layer 3 Switch Capabilities

The WS-C3750X-12S-S distinguishes itself as a Layer 3 switch, adding a layer of intelligence to its functionality. While traditional Layer 2 switches operate based on MAC addresses, Layer 3 switches take network decision-making to the IP address level.

This means that the WS-C3750X-12S-S can make routing decisions based on IP addresses, allowing for more efficient data traffic management. This capability is particularly valuable in complex networks where different subnets or VLANs need to communicate intelligently.

Applications and Use Cases

Enterprise Networks

The Cisco WS-C3750X-12S-S Catalyst 3750X is well-suited for enterprise-level networking. Its robust features and high-performance capabilities make it an ideal choice for connecting a multitude of devices within a corporate environment. The Gigabit Ethernet expansion slots ensure fast and reliable connectivity for various applications, from file sharing to video conferencing.

Data Centers

In data center environments, where the demand for high-speed and reliable networking is critical, the WS-C3750X-12S-S shines. The redundant power supply support adds an extra layer of reliability, ensuring that the switch can withstand power-related challenges common in data center setups. The Layer 3 capabilities also contribute to efficient data routing within the data center infrastructure.

Telecommunication Networks

Telecommunication networks require networking equipment that can handle large volumes of data traffic. The WS-C3750X-12S-S, with its Gigabit Ethernet expansion slots and Layer 3 capabilities, meets the requirements of telecommunications providers. The SFP support further enables the use of different types of connections, facilitating the integration of the switch into diverse telecommunication setups.


The Cisco WS-C3750X-12S-S Catalyst 3750X 12-port switch is a high-performance switch that is designed for use in enterprise networking environments. It has 12 SFP ports and supports a wide range of advanced features and capabilities, including Quality of Service (QoS), VLANs, and IPv6 support. The switch is powered by the Cisco StackWise-480 technology, which provides a high-bandwidth, highly available backplane that allows the switch to support a wide range of applications and workloads. It also has some redundant features, including redundant power supplies and fans, which help to ensure that the switch remains operational even if one of the components fails. Overall, the Cisco This product Catalyst 3750X 12-port switch is a high-performance, reliable choice for enterprise networking applications.


The Cisco WS-C3750X-12S-S is a standalone switch that can be used as part of a larger network. It is compatible with a wide range of networking devices and protocols, including routers, firewalls, and other switches. The switch supports some industry-standard protocols, including Ethernet, IPv4, IPv6, and various VLAN protocols. It is also compatible with some advanced features and technologies, such as Quality of Service (QoS), link aggregation, and energy-efficient Ethernet (EEE). In terms of hardware compatibility, the switch has 12 SFP ports that support a variety of optical transceivers and cables. It is also compatible with some third-party networking equipment and accessories. Overall, the Cisco Part is a highly compatible and flexible choice for enterprise networking applications.

General Information for the Cisco WS-C3750X-12S-S Managed Switch

  • Manufacturer: Cisco
  • Part Number or SKU# WS-C3750X-12S-S
  • Product Line: Catalyst
  • Product Series: 3750-X
  • Product Type: Layer 3 Switch

Technical Information of Layer 3 Switch

  • Number of Total Expansion Slots: 13
  • Token Ring Port: No
  • LRE Port: No
  • Stack Port: Yes
  • Port/Expansion Slot Details: 12 x Gigabit Ethernet Expansion Slot

I/O Expansions of 12 Ports Switch

  • Expansion Slot Type: SFP
  • Number of SFP Slots: 12

Power Description

  • PoE (RJ-45) Port: No
  • Input Voltage: 110 V AC & 220 V AC
  • Power Source: Power Supply
  • Redundant Power Supply: Yes

Network & Communication

  • Layer Supported: 3
  • Standard Memory: 256 MB
  • Memory Technology: DRAM
  • Flash Memory: 128 MB

In short, the Cisco WS-C3750X-12S-S Catalyst 3750X stands as a versatile and powerful networking solution, catering to the evolving needs of modern enterprises. From its impressive Gigabit Ethernet expansion slots to substantial memory configurations, space-efficient form factor, and redundant power supply support, the switch offers a comprehensive set of features for organizations seeking a reliable and high-performance networking infrastructure. As a Layer 3 switch, it brings advanced routing capabilities to the table, further solidifying its position as a valuable asset in the realm of network connectivity. Whether deployed in small to medium-sized businesses or large-scale enterprises, the Cisco WS-C3750X-12S-S Catalyst 3750X exemplifies Cisco's commitment to delivering cutting-edge networking solutions that empower businesses to thrive in the digital age.

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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