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by Cisco
Product Line: Cisco SG300
Product Type: Network Switch
Original price $0.00 - Original price $366.00
Original price
$0.00 - $366.00
Current price $366.00
Title: Used

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Product Description

The SG300-20 is equipped with 20 Gigabit Ethernet ports, including 18 RJ-45 ports and 2 combo ports (RJ-45 + SFP), supporting a forwarding rate of 29.76 Mpps and a switching capacity of 40 Gbps. It features a MAC table capable of storing up to 16K addresses and supports up to 4,096 VLANs, with a packet buffer size of 8 Mb and the ability to handle jumbo frames up to 9K bytes. The unit’s physical dimensions are 440 x 44.45 x 202.5 mm, weighing 4.78 kg, and operates within a temperature range of 0 °C to 50 °C, with a humidity tolerance from 10% to 90% (Non-Condensing).

Key Feature for the SG300-20

  • What is the total number of Gigabit Ethernet ports on this switch?
    The switch has a total of 20 Gigabit Ethernet ports.
  • How many RJ-45 ports does part number have?
    Part number includes 18 RJ-45 ports.
  • Can you explain the combo ports feature?
    This device features 2 combo ports, which offer flexibility by allowing either RJ-45 or SFP connections for uplinking.
  • What is the forwarding rate of part number?
    Part number supports a forwarding rate of 29.76 Mpps.
  • What is the switching capacity of this network switch?
    The switching capacity of the network switch is 40 Gbps.
  • How many MAC addresses can part number store?
    Part number can store up to 16K MAC addresses.
  • What is the maximum size for Jumbo Frames on this switch?
    The switch supports Jumbo Frames up to 9K Bytes in size.
  • What are the dimensions and weight of part number?
    Part number measures 440 x 44.45 x 202.5 mm and weighs 4.78 kg.
  • Does the switch support VLANs, and if so, how many?
    Yes, the switch supports up to 4,096 VLANs.
  • What are the included accessories with part number?
    Part number comes with a power cord, mounting kit, serial cable, CD-ROM with user documentation, and a quick start guide.

Product Review

The Cisco SG300-20 switch offers a solid performance with a forwarding rate of 29.76 Mpps and switching capacity of 40 Gbps, suitable for medium-sized networks requiring efficient traffic management. With 18 RJ-45 ports and 2 combo ports, it provides flexible connectivity options, though the limited flash memory of 16 MB could constrain advanced users. The high VLAN capacity (4,096) and support for jumbo frames up to 9K bytes are significant advantages for network segmentation and handling large data packets, but the device's operational temperature range and memory specifications may restrict its deployment in environments with extreme conditions or requiring extensive data processing tasks.


The Cisco SG300-20 is a managed switch designed to support a variety of networking needs with its comprehensive set of features. It offers a total of 20 Gigabit Ethernet ports for high-speed connectivity. This includes 18 RJ-45 ports for standard cable connections and 2 combo ports, which provide the flexibility of using either RJ-45 or SFP modules for fiber optic connections, enhancing the switch's adaptability to different network setups. At the heart of its performance, the SG300-20 boasts a forwarding rate of 29.76 Mpps (million packets per second) and a switching capacity of 40 Gbps, ensuring efficient handling of network traffic even under heavy loads. The switch supports a MAC table with up to 16K addresses, allowing for extensive device connectivity. It also accommodates up to 4,096 VLANs, providing significant flexibility in segmenting the network into different groups for security and management purposes. The SG300-20 supports jumbo frames up to 9K bytes, beneficial for optimizing network performance by allowing larger packets to be sent, reducing the overhead associated with processing numerous smaller packets. A reset button is included for quick troubleshooting and recovery from operational issues. For monitoring and status indication, the switch is equipped with multiple LEDs that display system status, link/activity, speed, PoE status, and includes an LED power-saving option to reduce energy consumption when possible. The hardware specifications include 16 MB of flash memory for firmware and configuration storage, 128 MB of CPU memory for processing power, and an 8 Mb packet buffer to handle transient data bursts. The physical dimensions of the SG300-20 are 440 mm in width, 44.45 mm in height, and 202.5 mm in depth, with a weight of 4.78 kg. It is designed to operate within a temperature range of 0°C to 50°C and can be stored in temperatures ranging from -20°C to 70°C. The operational relative humidity range is 10% to 90% (non-condensing), ensuring reliable performance across various environmental conditions. In terms of reliability, the switch has an MTBF (Mean Time Between Failures) of 144,237 hours, indicating a high level of dependability for continuous operation. The package includes essential accessories for immediate setup and deployment, such as a power cord, mounting kit, serial cable, CD-ROM with user documentation, and a quick start guide. - Total System Ports: 20 Gigabit Ethernet for comprehensive connectivity options. - VLAN Support: Up to 4,096 VLANs, offering extensive network segmentation capabilities. - Switching Capacity and Forwarding Rate: 40 Gbps and 29.76 Mpps, respectively, for efficient traffic management. The Cisco SG300-20 is tailored for businesses seeking a manageable, high-performance switch that provides the necessary infrastructure to support a demanding network environment.


Item Number and ProducerCisco SG300-20
Total Network Ports20 Gigabit Ethernet
Ethernet Ports (RJ-45)18
Mixed Ports (RJ-45 + SFP)2
Data Processing Rate29.76 Million packets per second
Switching Throughput40 Gigabits per second
Address Database Size16,000 Entries
Supported VLANs4,096
Maximum Frame Size9,000 Bytes
Reset MechanismButton
IndicatorsSystem, Link/Activity, Speed, Power over Ethernet, Energy-Saving LED
Internal Storage16 MB
Processor Memory128 MB
Buffer Size8 Megabits
Dimensions440 x 44.45 x 202.5 mm
Mass4.78 kilograms
Operation Temperature Low0 °C
Operation Temperature High50 °C
Storage Temperature Low-20 °C
Storage Temperature High70 °C
Operational Humidity Low10% (Non-Condensing)
Operational Humidity High90% (Non-Condensing)
Humidity During Storage10% to 90% (Non-Condensing)
Sound EmissionN/A
Expected Lifespan144,237 Hours
Included AccessoriesPower Cable, Hardware for Mounting, Console Cable, CD with Documentation, Quick Reference Guide

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