Cisco C9300-48UN-E Managed Switch
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C9300-48UN-E Cisco 48-Ports Managed Switch Refurbished

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Part Number#: C9300-48UN-E
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Short Description:
C9300-48UN-E Catalyst 9300 48 Ports RJ-45 1000Base-T 5 Gigabytes Per Second (GBPS) Power Over Ethernet Plus (PoE+) Gigabit Ethernet Rack-mountable Switch | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Product Overview

In the realm of networking solutions, the Cisco C9300-48UN-E Catalyst 9300 Switch stands out as a powerful and versatile device designed to cater to the evolving demands of modern networks. This comprehensive guide delves into the intricate features and capabilities of the C9300-48UN-E, emphasizing its 48 Ports RJ-45 1000Base-T, 5 Gigabytes Per Second (GBPS) throughput, Power Over Ethernet Plus (PoE+), and its adaptable rack-mountable design.

Understanding the Cisco C9300-48UN-E Catalyst 9300:

The Cisco C9300-48UN-E Catalyst 9300 is a flagship switch that embodies innovation and reliability. It offers a multitude of advanced features and functionalities tailored to meet the diverse requirements of businesses, enterprises, and organizations across various industries.

Key Features:
  • 48 Ports RJ-45 1000Base-T: The C9300-48UN-E boasts 48 RJ-45 ports that support 1000Base-T, providing high-speed connectivity for wired devices. These ports enable seamless integration of numerous devices into the network infrastructure, ensuring smooth data transmission.
  • 5 GBPS Throughput: One of the standout features of the C9300-48UN-E is its remarkable 5 Gigabytes Per Second (GBPS) throughput. This high throughput rate ensures swift data transfer across the network, facilitating efficient communication and data exchange between connected devices.
  • Power Over Ethernet Plus (PoE+): Power Over Ethernet Plus (PoE+) capabilities embedded within the C9300-48UN-E allow for the simultaneous transmission of data and power to connected devices through Ethernet cables. This feature simplifies network installations by eliminating the need for separate power sources for compatible devices, such as IP cameras, VoIP phones, and wireless access points.
  • Gigabit Ethernet Performance: The C9300-48UN-E operates on Gigabit Ethernet, offering superior performance in terms of speed and reliability. Gigabit Ethernet ensures that the network can handle high-bandwidth applications and data-intensive tasks without compromising on performance.
  • Rack-mountable Design: The switch's rack-mountable design provides flexibility in deployment, allowing it to be easily installed in standard rack units, optimizing space utilization in data centers or networking closets.
Advantages of 5 GBPS Throughput:

The 5 GBPS throughput capability of the Cisco C9300-48UN-E Catalyst 9300 Switch brings several advantages to network environments:

  • Enhanced Data Transfer Speed: The high throughput of 5 GBPS enables faster data transfer between devices connected to the switch. This results in reduced latency and improved overall network performance, crucial for applications requiring real-time data processing.
  • Support for Bandwidth-Intensive Applications: With 5 GBPS throughput, the C9300-48UN-E can efficiently support bandwidth-hungry applications such as video streaming, large file transfers, and data backups, ensuring smooth operations within the network.
  • Scalability and Future-Proofing: The switch's high throughput capacity ensures scalability, allowing networks to accommodate growing demands without experiencing bottlenecks. This future-proofing capability is essential for businesses anticipating expansion and increased data needs.
Power Over Ethernet Plus (PoE+) Benefits:

The inclusion of PoE+ in the C9300-48UN-E brings several advantages to network deployments:

  • Simplified Installation and Maintenance: PoE+ simplifies network installations by reducing the complexity associated with power sourcing for connected devices. It streamlines cabling requirements and facilitates easier maintenance, contributing to cost and time savings.
  • Flexibility and Accessibility: PoE+ enables greater flexibility in device placement by eliminating the dependency on proximity to power outlets. Devices such as IP phones, security cameras, and wireless access points can be conveniently deployed in optimal locations without worrying about power accessibility.
  • Energy Efficiency: By consolidating power and data transmission over Ethernet cables, PoE+ promotes energy efficiency. It allows for better management of power consumption, contributing to environmentally friendly and cost-effective operations.

Applications and Use Cases:

The Cisco C9300-48UN-E Catalyst 9300 Switch finds applications across various industries and scenarios:

  • Enterprise Networks: In enterprise settings, the switch's high-speed connectivity and PoE+ capabilities ensure seamless integration of multiple devices while maintaining network performance, catering to the demands of diverse operations.
  • Education Environments: Educational institutions benefit from the C9300-48UN-E's ability to support a large number of wired connections, facilitating smooth data transfer for classrooms, laboratories, and administrative areas.
  • Surveillance Systems: The PoE+ feature is particularly advantageous in surveillance systems, powering IP cameras and facilitating data transmission over the same Ethernet cables, simplifying installation and maintenance.
  • Small to Medium-Sized Businesses (SMBs): SMBs benefit from the switch's scalability and robust performance, enabling them to build reliable networks that can accommodate growth without compromising efficiency.

High Performance

The C9300-48UN-E Cisco Catalyst 9300 48-Ports Managed Switch is a high-performance network switch designed for enterprise and campus environments. The switch offers 48 Gigabit Ethernet ports and four 10 Gigabit Ethernet ports, providing ample connectivity options for businesses with high-speed data transfer requirements.

One of the key features of this switch is its ability to handle high-density traffic. The switch is designed to provide line-rate performance, ensuring that network traffic is delivered quickly and efficiently. Additionally, the switch supports advanced traffic management features such as Quality of Service (QoS) and link aggregation, which allows you to prioritize critical traffic and improve network performance.

Another important feature of This product switch is its security capabilities. The switch is equipped with advanced security features such as Access Control Lists (ACLs), Network Admission Control (NAC), and Cisco TrustSec technology. These features help to prevent unauthorized access and network threats, keeping your business's data and network safe and secure.

Additionally, the switch offers Cisco DNA advantages, including software-defined access, network automation, and assurance. With Cisco DNA, network administrators can simplify network operations, and gain more insights, automate network tasks, and troubleshoot network issues more effectively.

Reliability Information

The switch also features advanced reliability features such as Link Aggregation Control Protocol (LACP) and Link Layer Discovery Protocol (LLDP). These features help to ensure that the switch remains operational even if one of the ports or links fails. In case of a link failure, LACP enables the switch to automatically reroute the traffic through an alternative path, thereby ensuring the continuity of network services. LLDP, on the other hand, provides a standard method for the switch to discover and configure the neighboring devices, which helps in identifying the failure point easily.

Additionally, the switch is designed to handle high-density traffic and is able to provide line-rate performance, which ensures that network traffic is delivered quickly and efficiently. This reduces the chances of traffic congestion and improves the overall reliability of the network.

Robust Security and Dynamic Quality

This item Cisco Catalyst 9300 48-Ports Managed Switch is a powerful and reliable network switch that provides robust security and dynamic quality performance. The switch is designed to meet the demands of modern businesses and is equipped with a variety of advanced security and performance features.

One of the key features of this switch is its robust security capabilities. The switch includes advanced security features such as Access Control Lists (ACLs), Network Admission Control (NAC), and Cisco TrustSec technology. ACLs provide the ability to define which devices can access the network and what actions they can take, while NAC ensures that only authorized devices can access the network. Cisco TrustSec technology provides end-to-end security and compliance through a simplified and automated security framework.

The switch also offers dynamic quality performance. It features Quality of Service (QoS) capabilities that allow you to prioritize critical traffic and ensure that mission-critical applications are delivered smoothly. Additionally, the switch includes advanced traffic management tools such as Link Aggregation Control Protocol (LACP) and port-based VLANs, which help ensure optimal network performance.

The switch also supports Cisco's Flexible NetFlow (FNF) technology, which provides real-time network visibility and improves network troubleshooting and problem resolution. Additionally, The switch supports Cisco's DNA Advantage which helps to automate the software provisioning, security, and network management functions.

General Information about this Cisco C9300-48UN-E
  • Manufacturer: Cisco
  • Part Number or SKU# C9300-48UN-E
  • Product Line: Catalyst
  • Product Series: 9300
  • Product Model: C9300-48UN
  • Product Type: Ethernet Switch
Interfaces/Ports for Layer 3 Switch
  • Total Number of Network Ports 48
  • Uplink Port: Yes
  • Modular: Yes
  • Stack Port: Yes
  • Port/Expansion Slot Details: 48 x 5 Gigabit Ethernet UPoE
  • Port/Expansion Slot Details: 1 x Uplink
I/O Expansions of 48 Ports Switch
  • Number of Total Expansion Slots: 1
  • Expansion Slot Type: Uplink Module
Media & Performance
  • Media Type Supported Twisted Pair
  • Ethernet Technology 5 Gigabit Ethernet
  • Network Technology 5GBase-T
  • Switching capacity: 640 GBPS
  • Stacking bandwidth: 480 GBPS
  • Forwarding rate: 190.48 MPPS
Network & Communication
  • Layer Supported: 3
Management & Protocols
  • Manageable: Yes


  • Jumbo Frame Support: 9198 bytes
  • MAC Address Table Size: 32000 entries
  • Remote Management Protocol: CLI, NETCONF, RESTCONF, RMON 1, RMON 2, SNMP 1, SNMP 2c, SNMP 3
  • Routing Protocol: IGMP, IS-IS, OSPF, OSPFv3, PIM-SM, PIM-SSM, Policy-based routing (PBR), RIP-1, RIP-2, RIPng, VRRP
  • Compliant Standards : IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad (LACP), IEEE 802.3af, IEEE 802.3at, IEEE 802.3u, IEEE 802.3x


  • 16MB packet buffer, 3 fans, 802.1x authentication, Access Control List (ACL) support, Cisco StackPower technology, Cisco StackWise-480 technology, Control plane protection (CoPP), Flexible NetFlow (FNF), FTP client, Full duplex mode, Integrated Wireshark, Management Information Base (MIB), Private VLAN, Quality of Service (QoS), Remote Switch Port Analyzer (RSPAN), Source-Specific Multicast (SSM), Spanning Tree Protocol (STP) support, Trunking, VLAN Double Tagging (Q-in-Q), Weighted Random Early Detection (WRED)

Power Description

  • PoE (RJ-45) Port: Yes
  • PoE Budget: 645 W
  • Voltage Required: AC 120/230 V
  • Frequency: 50 Hz, 60 Hz
  • Power Source: Power Supply
  • Redundant Power Supply Supported: Yes
  • Power Consumption: 1100 W
  • Plug/Connector Type: IEC 60320 C16


  • RAM: 8 GB
  • Flash Memory: 16 GB

Environmental Parameters

  • Min Operating Temperature: 23 °F
  • Max Operating Temperature: 113 °F
  • Humidity Range Operating: 5 - 90% (non-condensing)
  • Min Storage Temperature: -40 °F
  • Max Storage Temperature: 158 °F
  • Humidity Range Storage: 5 - 90% (non-condensing)


  • Package Contents-
  • Catalyst 9300-48UN-E Switch
  • 1 x Power Supply
  • 3 x Field-Replaceable Fans
  • Environmentally Friendly: Yes
  • Environmental Certification: RoHS-5, WEEE

In summary, the Cisco C9300-48UN-E Catalyst 9300 Switch emerges as a versatile and high-performance networking solution that addresses the evolving needs of modern networks. With its 48 Ports RJ-45 1000Base-T, 5 GBPS throughput, Power Over Ethernet Plus (PoE+), and rack-mountable design, this switch delivers exceptional connectivity, scalability, and efficiency across various industries and use cases. Its advanced features empower organizations to build robust networks capable of handling the demands of today and the scalability required for future growth, making it a valuable asset in the realm of 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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What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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(b) any misuse outside the instructions in the user manual for any specific product;

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What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

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