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by Cisco
Product Line: Cisco SG30028MPK9
Product Type: Switch
Original price $0.00 - Original price $495.00
Original price
$0.00 - $495.00
Current price $495.00
Title: Used

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Product Description

The SG300-28MP-K9 Cisco switch features 28 Gigabit Ethernet ports, including 26 RJ-45 ports and 2 combo ports (RJ-45 + SFP), supporting a forwarding rate of 41.67 Mpps and a switching capacity of 56 Gbps. It is designed with a MAC table of 16K addresses, supports up to 4,096 VLANs, and accommodates jumbo frames of 9K bytes, ensuring efficient network traffic management. The unit comes equipped with 16 MB of flash memory, 128 MB of CPU memory, and an 8 Mb packet buffer, housed in a chassis measuring 440 x 44.45 x 350 mm and weighing 5.26 kg, making it suitable for a variety of networking environments.

Key Feature for the SG30028MPK9

  • What is the total number of Gigabit Ethernet ports available on this device?
    The device offers a total of 28 Gigabit Ethernet ports, including 26 RJ-45 ports and 2 combo ports (RJ-45 + SFP).
  • How many VLANs does the part support?
    It supports up to 4,096 VLANs.
  • What is the forwarding rate of this networking hardware?
    The forwarding rate is 41.67 Mpps (Million packets per second).
  • Can you specify the MAC Table size for this model?
    The MAC Table can accommodate 16K addresses.
  • What are the dimensions of this network switch?
    The dimensions are 440 mm in width, 44.45 mm in height, and 350 mm in depth.
  • What type of memory is included with the device?
    The device includes 16 MB of flash memory and 128 MB of CPU memory.
  • Is there a feature for LED power saving on this switch?
    Yes, there is an LED power saving option available.
  • What is the maximum operating temperature for the switch?
    The maximum operating temperature is 50 °C.
  • What accessories come with the switch?
    It comes with a power cord, mounting kit, serial cable, CD-ROM with user documentation, and a quick start guide.
  • What is the Mean Time Between Failures (MTBF) for this model?
    The MTBF is 138,676.92 hours.

Product Review

The Cisco SG300-28MP-K9 offers a comprehensive feature set, including a high switching capacity of 56 Gbps and support for up to 4,096 VLANs, making it suitable for complex network environments. However, its limited flash memory of 16 MB could be a constraint for extensive firmware upgrades or configurations. Additionally, the noise level may be a consideration for deployment in quieter office settings, with acoustic noise reaching up to 54dB at higher temperatures.


The Cisco SG300-28MP-K9 is a managed switch designed to support the demands of dynamic and growing businesses with its comprehensive set of features. This switch offers a total of 28 Gigabit Ethernet ports, providing a solid foundation for data transfer across a network. Out of these, 26 are RJ-45 ports dedicated to connecting a wide array of devices. Additionally, it includes 2 combo ports, which combine RJ-45 and SFP (Small Form-factor Pluggable) functionalities, offering flexibility in connection types and the advantage of fiber connectivity when needed. This model is engineered for efficiency with a forwarding rate of 41.67 million packets per second (Mpps) and a switching capacity of 56 gigabits per second (Gbps), ensuring swift handling of data even during peak usage times. The device can support up to 16K MAC addresses, catering to a large number of connected devices without compromising on performance. For network segmentation and management, it supports up to 4,096 VLANs. The SG300-28MP-K9 is also capable of handling jumbo frames up to 9K bytes, beneficial for optimizing data transfer rates for large data packets. Key hardware features include: - A reset button for simple device resets. - Multiple LEDs for system monitoring, including System, Link/Act, Speed, PoE, and an LED Power Saving option, which can reduce power consumption. The internal hardware is built to handle demanding network tasks with 16 MB of flash memory and 128 MB of CPU memory, accompanied by an 8 Mb packet buffer to ensure smooth data processing and storage for network operations. The device measures 440 mm in width, 44.45 mm in height, and 350 mm in depth, with a total weight of 5.26 kg, making it suitable for rack-mount installation in a standard server rack. Environmental resilience is a key feature of the SG300-28MP-K9, operating efficiently within a temperature range of 0 °C to 50 °C and a storage temperature range from -20 °C to 70 °C. Its design also allows for operation in a wide range of humidity conditions, from 10% to 90% (non-condensing), ensuring reliability in various environmental conditions. The device generates acoustic noise levels of 41.7dB at a temperature of 30°C and increases to 54dB at 50°C, maintaining a balance between performance and noise level. With a mean time between failures (MTBF) of 138,676.92 hours, this switch exemplifies reliability for long-term operations. Each unit comes equipped with essential accessories for immediate deployment, including a power cord, mounting kit, serial cable, and a CD-ROM with user documentation, along with a quick start guide to assist in the setup process. In summary, the Cisco SG300-28MP-K9 combines a comprehensive set of features with hardware engineered for reliability and performance, making it a suitable choice for businesses looking to build or expand their network infrastructure with a managed switch that offers both flexibility and capacity.


Product NumberSG300-28MP-K9
Total Ethernet Ports28 Gigabit
Ethernet RJ-45 Interfaces26
Dual-purpose Ports (RJ-45 + SFP)2
Data Transfer Rate41.67 Million Packets per Second
Maximum Switching Capacity56 Gigabits per Second
Address Database Size16,000 Entries
Supported VLANs4096
Maximum Frame Size9000 Bytes
Control ButtonReset
Indicator LightsSystem Status, Activity/Link, Speed, Power over Ethernet, Energy-saving Indicator
Storage16 MB Flash
Operating Memory128 MB
Buffer Size8 Megabits
Dimensions440 x 44.45 x 350 mm (W x H x D)
Net Weight5.26 Kilograms
Operational Temperature Range0 to 50 °C
Storage Temperature Range-20 to 70 °C
Operational Humidity Range10% to 90% Non-Condensing
Humidity Range During Storage10% to 90% Non-Condensing
Noise Level41.7 dB at 30°C, 54 dB at 50°C
Mean Time Between Failures (MTBF)138,676.92 Hours
Included AccessoriesPower Cord, Mounting Hardware, Serial Interface Cable, CD-ROM with Documentation, Quick Installation Guide

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