Cisco SG550X-48P-K9 48 Ports Managed Switch Gigabit Ethernet Refurbished

The Cisco SG550X-48P-K9 is a powerful and feature-rich small business managed switch designed to meet the networking needs of businesses requiring robust performance, scalability, and advanced management capabilities. This managed switch offers 48 ports of 10/100/1000Base-T, providing one gigabyte per second (Gbps) data transfer rates. With Power Over Ethernet Plus (PoE+), Layer 3 (L3) capabilities, and a rack-mountable design, this switch is a versatile option for businesses looking to enhance their network infrastructure.

The switch features a total of 48 ports, each capable of supporting 10/100/1000Base-T. This implies that the switch can accommodate devices with different Ethernet speeds, making it versatile for various networking requirements within a small business environment. The gigabit-per-second data transfer speed ensures swift and reliable data communication.

A standout feature of the Cisco SG550X-48P-K9 is its support for Power over Ethernet Plus (PoE+). This technology enables the switch to deliver both data and electrical power over the Ethernet cables to connected devices such as IP cameras, VoIP phones, and wireless access points. This eliminates the need for separate power sources for these devices, simplifying installation and reducing cable clutter.

The switch operates at Layer 3 of the OSI (Open Systems Interconnection) model, providing advanced routing capabilities. This allows for efficient traffic management and optimization within the network. Layer 3 switches are crucial for businesses with complex networking needs, as they can make routing decisions based on IP addresses, enhancing the overall performance and security of the network.

The Cisco SG550X-48P-K9 is designed to be rack-mountable, offering a space-efficient solution for businesses looking to optimize their networking infrastructure. The rack-mountable design simplifies the organization of network equipment, making it easier to manage and maintain.

The switch features combo ports that support both 10 Gigabit Ethernet and Small Form-Factor Pluggable Plus (SFP+). This flexibility allows businesses to choose the most suitable connectivity options based on their specific requirements. The 10 Gigabit Ethernet provides high-speed data transfer, while the SFP+ ports enable the use of fiber optic connections for extended reach and improved performance.

Virtual Local Area Networks (VLANs) are supported by the Cisco SG550X-48P-K9, allowing businesses to segment their network into isolated sections. This enhances security by preventing unauthorized access to sensitive data and resources. VLAN support also contributes to improved network performance and easier management of devices within the network.

Access Control Lists (ACLs) are an integral part of the switch's security features. ACLs enable businesses to define rules and policies for controlling traffic within the network. By specifying which devices or users are allowed or denied access to specific resources, businesses can enhance the overall security of their network infrastructure.

The switch supports both Secure Shell (SSH) and Secure Sockets Layer (SSL) encryption protocols. These protocols ensure secure remote management of the switch, protecting sensitive information from unauthorized access. SSH and SSL encryption are essential for maintaining the confidentiality and integrity of network management activities.

The Cisco SG550X-48P-K9 incorporates Energy-Efficient Ethernet (EEE) technology, which automatically adjusts the power consumption of the switch based on network traffic. During periods of low activity, the switch reduces power consumption, contributing to energy savings and environmental sustainability.

To further enhance energy efficiency, the switch is equipped with smart fan technology. The fans operate intelligently, adjusting their speed based on the temperature within the networking environment. This not only contributes to energy savings but also ensures a quieter operation, creating a more comfortable working environment.

• Scalability: The Cisco SG550X-48P-K9 is designed with scalability in mind. With 48 ports, businesses can easily expand their network infrastructure to accommodate growing demands. The inclusion of combo SFP+ ports further supports scalability by providing options for high-speed connections.
• Simplified Deployment: The PoE+ capability simplifies the deployment of network devices, reducing the need for separate power sources. This not only streamlines the installation process but also enhances the flexibility of device placement within the network.
• Enhanced Network Performance: The impressive 1 GBPS throughput and Layer3 management capabilities contribute to enhanced network performance. Businesses can experience smoother data transfer, lower latency, and improved overall efficiency in handling network traffic.
• Versatility in Connectivity: The combination of 10/100/1000Base-T ports and combo SFP+ ports provides businesses with a versatile range of connectivity options. Whether connecting legacy devices with lower speeds or integrating high-speed connections with fiber-optic cables, the SG550X-48P-K9 accommodates diverse networking needs.
• Reliability and Durability: Cisco is renowned for producing reliable and durable networking equipment. The SG550X-48P-K9 is no exception, offering businesses a robust solution that can withstand the demands of everyday network operations.

The Cisco SG550X-48P-K9 switch is compliant with some industry standards that ensure its compatibility with other networking equipment and that it meets certain requirements for functionality and performance.

Some of the key compliant standards for the model switch include:

• IEEE 802.3: This standard defines the physical layer and media access control (MAC) specifications for Ethernet, which is the most widely used local area network (LAN) technology.
• IEEE 802.3u: This standard defines the specifications for Fast Ethernet, which provides a data rate of 100Mbps over twisted pair and fiber-optic cables.
• IEEE 802.3z: This standard defines the specifications for Gigabit Ethernet, which provides a data rate of 1Gbps over twisted pair and fiber-optic cables.
• IEEE 802.3ab: This standard defines the specifications for 1000BASE-T, which provides a data rate of 1Gbps over twisted pair cables.
• IEEE 802.3af: This standard defines the specifications for Power over Ethernet (PoE), which allows devices to receive power over their Ethernet cables.
• IEEE 802.3at: This standard defines the specifications for Power over Ethernet Plus (PoE+), which allows devices to receive higher power levels over their Ethernet cables.
• IEEE 802.3x: This standard defines the specifications for full-duplex and flow control in Ethernet networks.
• IEEE 802.1D: This standard defines the specifications for the Spanning Tree Protocol (STP), which is used to prevent loops in a network and ensure that there is a single active path between two devices.
• IEEE 802.1Q: This standard defines the specifications for Virtual LANs (VLANs), which allow for the creation of multiple logical networks on a single physical network.
• IEEE 802.1p: This standard defines the specifications for Quality of Service (QoS) in LANs, which allows for the prioritization of different types of traffic.
• IEEE 802.1w: This standard defines the specifications for Rapid Spanning Tree Protocol (RSTP), which is an enhancement to the Spanning Tree Protocol (STP) that provides faster recovery in case of a failure.

• Manufacturer: Cisco
• Model Number or SKU# SG550X-48P-K9
• Product Series: 550X
• Product Type: Layer 3 Switch

• Total Number of Network Ports: 48
• Uplink Port: Yes
• Modular: Yes
• Stack Port: Yes
• Port/Expansion Slot Details: 4 x 10 Gigabit Ethernet Expansion Slot
• Port/Expansion Slot Details: 48 x Gigabit Ethernet Network
• Port/Expansion Slot Details: 2 x 10 Gigabit Ethernet Uplink

• Media Type Supported: Twisted Pair
• Media Type Supported: Optical Fiber
• Forwarding performance (64-byte packet size): 130.94 Mpps
• Switching capacity: 176 Gbps

• Number of Total Expansion Slots: 4
• Expansion Slot Type: SFP+
• Shared SFP Slot: Yes
• Number of SFP+ Slots: 4

• Power Device: Internal power supply
• Voltage Required: AC 120/230 V (50/60 Hz)
• Power over Ethernet (PoE): Yes
• Power over Ethernet (PoE) power per port: 60 W
• Power Consumption Operational: 494.3 Watt
• Redundant Power Supply Supported: No
• Total Power over Ethernet (PoE) budget: 382 Watt

Processor & Memory

• RAM: 512 MB
• Flash Memory: 256 MB

In summary, the Cisco SG550X-48P-K9 Small Business Managed Switch stands out as a versatile and powerful networking solution for businesses seeking high performance, scalability, and advanced management capabilities. With its comprehensive set of features, robust specifications, and user-friendly design, this switch is well-suited for a wide range of applications, from small and medium-sized enterprises to larger corporate environments. Investing in the Cisco SG550X-48P-K9 ensures a reliable and future-proofed networking infrastructure that can adapt to the evolving needs of modern businesses.