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by Cisco
Product Line: Cisco SG550X24PK9
Product Type: Network Switch
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Title: Surplus

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Product Description

The SG550X-24P-K9 Cisco features 24 GE network ports and 4 10 GE uplink ports (2 Copper/SFP+ Combo + 2 SFP+), supporting a forwarding rate of 95.23 Mpps and a switching capacity of 128 Gbps. It is designed with a MAC table capacity of 32K addresses and supports up to 4,094 VLANs, with a jumbo frame size of 9K bytes. The hardware includes 256 MB flash memory and 256 MB CPU memory, a packet buffer of 1.5 MB, and operates within a temperature range of 0 °C to 50 °C, ensuring reliability and durability in various environments.

Key Feature for the SG550X24PK9

  • What is the total number of system ports available?
    The system features 24 Gigabit Ethernet (GE) ports and 4 10-Gigabit Ethernet (10 GE) ports, totaling 28 ports.
  • How does the forwarding rate of this device enhance network performance?
    With a forwarding rate of 95.23 million packets per second (Mpps), the device efficiently manages network traffic, minimizing bottlenecks and ensuring smooth data transmission.
  • Can you detail the uplink port configuration?
    The device includes 2 10 GE Copper/SFP+ Combo ports and 2 additional SFP+ ports, providing flexible uplink connectivity options.
  • What are the key benefits of the MAC table size?
    A MAC table with 32K addresses allows the device to efficiently handle a large number of networked devices without performance degradation, supporting expansive network environments.
  • How many VLANs does this device support, and why is that important?
    It supports up to 4,094 VLANs, enabling extensive network segmentation and improved security and traffic management across diverse operational environments.
  • What is the significance of the jumbo frames support in this device?
    Support for 9K bytes jumbo frames allows the device to handle larger data packets, reducing overhead and improving network efficiency, particularly in high-data scenarios.
  • Describe the physical characteristics of this networking device.
    The device measures 440 mm in width, 44 mm in height, and 350 mm in depth, with a weight of 4.72 kg, designed for standard rack mounting.
  • How does the device's operating temperature range ensure reliability in various environments?
    With an operating temperature range of 0 °C to 50 °C, the device reliably functions in a wide range of environmental conditions, ensuring consistent network performance.
  • What are the acoustic noise levels of this device, and how do they vary with temperature?
    Acoustic noise levels are 41 dB from 0 °C to 30 °C and increase to 52.9 dB at 50 °C, indicating the device remains relatively quiet under normal operating conditions but may produce more noise at higher temperatures.
  • What components are included with the device to facilitate immediate setup?
    The device comes with a power cord, mounting kit, console cable, and a quick start guide, providing all necessary items for setup and configuration.

Product Review

The Cisco SG550X-24P-K9 provides an impressive switching capacity of 128 Gbps and a forwarding rate of 95.23 Mpps, supporting high-speed data processing and traffic management. With its 24 Gigabit Ethernet ports plus 4 10-Gigabit Ethernet uplinks, it offers ample connectivity options for growing networks, yet the device's reliance on traditional copper for two of the 10G uplinks might limit future-proofing in purely fiber environments. The unit's operational noise levels range from moderate to high depending on temperature, potentially affecting deployment in noise-sensitive areas.


The Cisco SG550X-24P-K9 is a high-capacity switch designed to accommodate the needs of demanding network environments. It features a total of 24 Gigabit Ethernet ports and 4 10-Gigabit Ethernet ports, providing a versatile mix of connectivity options. The network ports include 24 Gigabit Ethernet interfaces for connecting a wide range of devices. For uplink connectivity, the switch is equipped with 2 10-Gigabit Ethernet copper/SFP+ combo ports and an additional 2 SFP+ ports, allowing for flexible fiber or copper connections. With a forwarding rate of 95.23 million packets per second (Mpps) and a switching capacity of 128 Gbps, this switch is capable of handling significant data traffic, ensuring efficient data flow across the network. It supports a MAC table with up to 32K addresses, enabling the switch to manage a large number of connected devices efficiently. The VLAN support is extensive, with the capability to configure up to 4,094 VLANs, facilitating complex network segmentation and enhancing security. The SG550X-24P-K9 is designed to support jumbo frames up to 9K bytes, improving network performance for large data transfers. The switch includes a reset button for simple troubleshooting and features various LEDs for system, master, stack ID, fan, RPS, and link/speed per port indicators, providing at-a-glance status information. For storage and processing, the switch is equipped with 256 MB of flash memory and 256 MB of CPU memory, respectively, offering ample space and processing power for the switch's operation and management features. It also includes a 1.5 MB packet buffer to ensure smooth data transmission. The physical dimensions of the switch are 440 mm in width, 44 mm in height, and 350 mm in depth, with a weight of 4.72 kg, making it suitable for rack mounting in a standard 19-inch rack. It operates within a temperature range of 0 °C to 50 °C and can be stored in temperatures ranging from -20 °C to 70 °C. The operating relative humidity is 10% to 90% (non-condensing), ensuring reliable operation in a wide range of environmental conditions. The acoustic noise level is 41 dB at temperatures from 0 °C to 30 °C and increases to 52.9 dB at 50 °C, balancing performance with noise control. The mean time between failures (MTBF) is rated at 299,949 hours, indicating high reliability and longevity. Included with the switch are a power cord, mounting kit, console cable, and a quick start guide, providing all necessary components for setup and management. The voltage rating for the device is 100 V to 240 V, accommodating a broad range of power supplies and ensuring compatibility across different regions. Key hardware specifications include: -
  • Total System Ports: 24 GE + 4 10 GE
  • Switching Capacity: 128 Gbps
  • Forwarding Rate: 95.23 Mpps
This overview highlights the Cisco SG550X-24P-K9’s hardware specifications, showcasing its capabilities and features designed to meet the needs of advanced networks.


Item Number and Maker Cisco SG550X-24P-K9
Total Interface Count 24 Gigabit Ethernet + 4 10-Gigabit Ethernet
Gigabit Ethernet Interfaces 24
Uplink Interfaces 2 10GE Copper/SFP+ Combo + 2 SFP+
Data Transfer Rate 95.23 Million packets per second
Bandwidth 128 Gigabits per second
MAC Address Capacity 32,000
Virtual LANs Support 4094
Maximum Frame Size 9000 Bytes
Reset Mechanism Button
Indicators System, Master, Stack ID, Fan, RPS, Link/Speed for each port
Internal Storage 256 Megabytes
Processor Memory 256 Megabytes
Buffer Memory 1.5 Megabytes
Dimensions 440 mm x 44 mm x 350 mm
Mass 4.72 kilograms
Functional Temperature Range 0 Degrees Celsius to 50 Degrees Celsius
Storage Temperature Range -20 Degrees Celsius to 70 Degrees Celsius
Operational Humidity Range 10% to 90% (Non-Condensing)
Storage Humidity Range 10% to 90% (Non-Condensing)
Sound Emission 41 dB up to 30°C, 52.9 dB at 50°C
Estimated Reliability 299,949 Hours
Included Accessories Power Cable, Mounting Equipment, Console Wire, Quick Reference Guide
Power Requirement 100 Volts to 240 Volts

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