Cisco WS-C3750G-48PS-E Switch
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Cisco WS-C3750G-48PS-E 48 Ports Managed Switch Catalyst Refurbished

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Part Number#: WS-C3750G-48PS-E
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Short Description:
WS-C3750G-48PS-E Catalyst 3750 48 Ports 10/100/1000T RJ-45 Power Over Ethernet (PoE) Manageable Layer 4 Twisted Pair Rack Mountable 1U and Stackable Switch with 4 SFP Ports | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Understanding the WS-C3750G-48PS-E Catalyst 3750 Switch

The WS-C3750G-48PS-E Catalyst 3750 is a robust network switch designed to meet the demands of modern networking environments. In this comprehensive guide, we will delve into the features and specifications of this switch, shedding light on its capabilities and applications. Whether you're a networking professional or someone looking to understand network infrastructure, this guide aims to provide you with a clear and detailed understanding of the WS-C3750G-48PS-E Catalyst 3750 switch.

Overview of WS-C3750G-48PS-E Catalyst 3750 Switch

The WS-C3750G-48PS-E Catalyst 3750 switch is a powerful networking device equipped with 48 ports supporting 10/100/1000T RJ-45 connectivity. This switch is designed to facilitate high-speed data transfer over Ethernet connections, making it an ideal choice for environments demanding reliable and efficient network performance.

48 Ports for Enhanced Connectivity

The WS-C3750G-48PS-E is equipped with 48 ports, allowing for a high degree of connectivity. These ports support 10/100/1000T RJ-45, providing flexibility for various network devices. The abundance of ports is particularly advantageous for businesses and organizations with numerous devices requiring network access.

Power Over Ethernet (PoE) Functionality

One notable feature of the WS-C3750G-48PS-E is its Power Over Ethernet (PoE) capability. This means that the switch can deliver power to connected devices, such as IP cameras, VoIP phones, and other PoE-enabled devices, through the Ethernet cable. This eliminates the need for additional power sources, simplifying the deployment of devices and reducing cable clutter.

Manageability and Layer 4 Functionality

The WS-C3750G-48PS-E Catalyst 3750 switch boasts advanced manageability features, allowing network administrators to efficiently monitor and control network traffic. With Layer 4 functionality, the switch operates at the transport layer of the OSI model, enabling it to make intelligent routing decisions based on application-specific data. This enhances the overall performance and efficiency of the network.

Twisted Pair Connectivity

The switch supports twisted pair connectivity, which refers to the use of twisted pair cables for transmitting data. Twisted pair cables are known for their reliability and cost-effectiveness, making them a popular choice in networking infrastructure. The WS-C3750G-48PS-E's support for twisted pair connectivity ensures a stable and efficient data transfer environment.

Rack Mountable and 1U Form Factor

The WS-C3750G-48PS-E Catalyst 3750 switch is designed with convenience in mind, featuring a rack-mountable design. This allows the switch to be easily installed in standard server racks, optimizing space utilization. The 1U (1 Rack Unit) form factor further contributes to space efficiency, making it an excellent choice for organizations with limited rack space.

Stackable Switch with 4 SFP Ports

A notable feature that enhances the scalability of the WS-C3750G-48PS-E is its stackable capability. This means that multiple switches can be interconnected to form a single logical unit, simplifying management and scalability. Additionally, the switch is equipped with 4 Small Form-Factor pluggable (SFP) ports, providing flexibility for fiber optic connections and extending the reach of the network.

  • Enterprise Networks: The WS-C3750G-48PS-E is well-suited for enterprise networks where a large number of devices need to be connected. Its 48 ports and PoE capability make it an ideal choice for powering and connecting numerous devices such as computers, printers, and IP phones in an office environment.
  • Surveillance Systems: The PoE capability of the switch makes it an excellent choice for surveillance systems. IP cameras, often used in modern surveillance setups, can be powered directly from the switch, simplifying installation and reducing the need for separate power sources at each camera location.
  • VoIP (Voice over Internet Protocol) Deployments: Businesses relying on VoIP technology for communication can benefit from the WS-C3750G-48PS-E. The switch's PoE support ensures that VoIP phones receive both data and power through a single Ethernet cable, streamlining the deployment of VoIP systems.
  • Data Centers: In data center environments, where space is at a premium, the WS-C3750G-48PS-E's rack-mountable and stackable design proves advantageous. The ability to stack multiple switches simplifies network management and ensures high availability, critical for data center operations.
Network Security Features

Security is a paramount concern in modern networking, and the WS-C3750G-48PS-E addresses this by incorporating robust security features. This section delves into the security mechanisms implemented in the switch, including access control lists (ACLs), port security, and other measures to safeguard the network from unauthorized access and potential threats.

Performance and Reliability

The WS-C3750G-48PS-E Cisco Catalyst 3750 switch is designed for high performance and reliability in enterprise-class networks.

Performance: The switch has 48 10/100/1000 Ethernet ports, which can support high-speed data transfer. The switch also supports advanced features such as Quality of Service (QoS) and Link Aggregation Control Protocol (LACP) which can improve the overall performance of the network by prioritizing different types of traffic and increasing the bandwidth by aggregating multiple ports together.

The switch also supports advanced security features such as Cisco IOS Firewall, Cisco IOS IPS, and Cisco IOS SSL VPN which can provide a high level of security to the network.

Reliability: The switch is designed to be highly available and scalable. It supports advanced features such as redundancy protocols (HSRP, VRRP, and GLBP) and Cisco StackWise technology which increases the overall uptime of the network by providing redundancy and failover capability.

The switch also supports Cisco EnergyWise technology which helps reduce energy consumption and costs by monitoring and controlling the power consumption of network devices. This can help reduce the risk of power-related issues that could cause the switch to fail.

The switch also supports in-band and out-of-band management through a web interface, Telnet, or SSH, which can help network administrators troubleshoot and resolve any issues that may arise.

Compliant Standards

The model Cisco Catalyst 3750 switch is compliant with several industry standards, which help ensure that it is compatible with other network devices and can be used in a variety of environments. Some of the key standards that the switch is compliant with include:

  • IEEE 802.3: This is the standard for Ethernet, which defines the physical and data link layers of the OSI model. The switch is compliant with IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, and IEEE 802.3ab 1000BASE-T.
  • IEEE 802.3af: This is the standard for Power over Ethernet (PoE), which defines the specifications for supplying power over Ethernet cables. The switch is compliant with IEEE 802.3af, which means it can provide power to devices such as IP phones, wireless access points, and cameras over the Ethernet cables connected to them.
  • IEEE 802.1Q: This is the standard for Virtual LANs (VLANs), which allows for the creation of multiple virtual LANs on a single physical network. The switch is compliant with IEEE 802.1Q, which means it can support VLANs and provide traffic segmentation.
  • IEEE 802.3ad: This is the standard for Link Aggregation Control Protocol (LACP), which allows multiple physical links to be bundled together to form a single logical link. The switch is compliant with IEEE 802.3ad, which means it can support link aggregation and provide increased bandwidth and redundancy.
  • SNMP, RMON, and Syslog: These are standards for network management, monitoring and logging. The switch supports SNMP, RMON and Syslog, which means it can be managed and monitored remotely using a network management system.

The WS-C3750G-48PS-E is also compliant with other standards such as EIA/TIA-232, EIA/TIA-449, V.35, X.21, and RS-232. This helps ensure that the switch is compatible with a wide range of devices and can be used in a variety of environments.

General Information for the Cisco 48 Ports Stackable Gigabit Ethernet Switch
  • Manufacturer: Cisco
  • Part Number or SKU# WS-C3750G-48PS-E
  • Product Line: Catalyst
  • Product Series: 3750
  • Product Name: Catalyst 3750G-48PS Stackable Gigabit Ethernet Switch
  • Product Type: Ethernet Switch
Interfaces/Ports of Catalyst Managed Switch
  • Total Number of Network Ports: 48
  • Number of Network (RJ-45) Ports: 48
  • Port/Expansion Slot Details: 48 x Gigabit Ethernet Network
  • Port/Expansion Slot Details: 4 x Gigabit Ethernet Expansion Slot
Media & Performance
  • Media Type Supported: Twisted Pair
  • Twisted Pair Cable Standard: Category 5
  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 10Base-T
  • Network Technology: 10/100/1000Base-T
I/O Expansions
  • Number of Total Expansion Slots: 4
  • Expansion Slot Type: SFP
  • Number of SFP Slots: 4
Network & Communication
  • Layer Supported: 4


  • Standard Memory: 128 MB
  • Memory Technology: DRAM
  • Flash Memory: 32 MB


  • MTBF: 141005 Hour

Power Description

  • Input Voltage: 110 V AC
  • Input Voltage: 220 V AC
  • Power Source: Power Supply
  • Redundant Power Supply: Yes

In short, the WS-C3750G-48PS-E Catalyst 3750 switch is a versatile and feature-rich networking device that caters to the evolving needs of modern networks. Its combination of high-speed connectivity, Power Over Ethernet functionality, manageability, and security features make it a valuable asset in various networking environments. This comprehensive guide aims to equip readers with a detailed understanding of the WS-C3750G-48PS-E switch, enabling them to make informed decisions and effectively integrate it into their 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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