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SG300-20
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18 10/100/1000 ports, 2 combo mini-GBIC ports
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Name:
SG300-20
- Description:
- 18 10/100/1000 ports, 2 combo mini-GBIC ports
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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SG300-20 Overview
SG300-20 is a robust managed switch designed for small to medium-sized business networks, featuring a compact architecture with dependable AC power supply options for reliable operation. It delivers consistent performance through its integrated 10/100/1000 Ethernet ports and combo SFP uplink ports, ensuring efficient and secure network connectivity.
SG300-20 offers 20 fixed Ethernet ports along with two uplink ports while maintaining scalability for network growth even without stacking capability. The switch’s architecture supports Layer 2 and limited Layer 3 functions, making it ideal for diverse use cases that demand high performance and centralized management.
SG300-20 price is is available on request. Get immediate quote.
Request bulk order quote for SG300-20 for additional pricing. Browse the full Cisco 300 Series Managed Switches series or explore all Cisco products.
SG300-20 Specifications
- Product Type
- Switch
- Brand
- Cisco
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Desktop / Rack-mount
- Power Consumption
- 35W
- Number of Ethernet Ports
- 12–24 Ports
- Number of Downlink Ports
- 20 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- No
- Manufacturer Part Number
- SG300-20
- Uplink Configuration
- 1G
- IOS
- LAN Lite
- POE Support
- Non POE
- SFP Ports
- Combo
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 20 RJ45 ports and 2 combo SFP ports
- Flash Memory
- 64 MB
- Switching Capacity
- 28 Gbps
- Product Name
- Cisco SG300-20 Managed Switch
- Height
- 1.7 inches
- Width
- 17.5 inches
- Depth
- 9.4 inches
- Weight
- 9 lbs
SG300-20 Use Case
SMB Multi-VLAN Segmentation and QoS for VoIP and Wireless Access
In a 50-user small-business office deploying VoIP phones and Wi-Fi access points, the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports delivers hardware-based VLAN segmentation and granular QoS. Administrators carve out separate voice, data and wireless VLANs on the 18 Gigabit ports and apply traffic-prioritization rules to ensure crystal-clear voice quality while isolating guest Wi-Fi. The outcome is a simplified, secure network with deterministic performance for critical communications.
Data Center Rack Aggregation with Dual Fiber Uplink for High Availability
In a server-rack aggregation scenario, the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports serves as an edge switch connecting 16 application servers at Gigabit speeds, while the two combo mini-GBIC slots host redundant 1 Gbps fiber links to the core switch. This dual-uplink configuration provides automatic failover and load balancing, eliminating single points of failure and maximizing throughput. The benefit is a resilient, high-performance infrastructure that scales with growing compute demands.
Secure Guest and Corporate Network Isolation in Hospitality Environments
A boutique hotel leverages the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports to enforce strict separation between guest Internet access and internal management systems. By assigning guest rooms and public-area access points to isolated VLANs on the 18 copper ports and connecting the property management server via a fiber mini-GBIC uplink, IT achieves end-to-end traffic isolation and centralized policy enforcement. The result is enhanced data security, regulatory compliance and simplified network operations.
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Product Comparison Table 
| SG300-20 |  SG300-52MP |  SG300-10PP |  SG300-28MP |  SF302-08P | |
|---|---|---|---|---|---|
| Depth | 9.4 inches | 11.3 inches | 10.8 inches | 8.5 inches | 9 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 |
| Flash Memory | 64 MB | 256 MB | 32 MB | 64 MB | 32 MB |
| Form Factor | Desktop / Rack-mount | Rack-mount | Desktop / Rack-mount | Desktop / Rack-mount | Rack-mount |
| Height | 1.7 inches | 1.73 inches | 1.73 inches | 1.75 inches | 1.73 inches |
| IOS | LAN Lite | LAN Lite | LAN Lite | LAN Lite | LAN Lite |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 Lite | Layer 2 / Layer 3 | Layer 2 / Layer 3 Lite | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | SG300-20 | SG300-52MP | SG300-10PP | SG300-28MP | SF302-08P |
| Media Type Supported | Combo | Twisted Pair / Fiber | Combo | Twisted Pair / Fiber / Combo | Twisted Pair |
| Memory | 256 MB | 256 MB | 64 MB | 128 MB | 64 MB |
| Number of Downlink Ports | 20 Ports | 48 Ports | 8 Ports | 24 Ports | 8 Ports |
| Number of Ethernet Ports | 12–24 Ports | Over 48 Ports | Under 12 Ports | 24–48 Ports | Under 12 Ports |
| POE Support | Non POE | POE+ | POE+ | POE+ | POE |
| Port/Expansion Slot Details | 20 RJ45 ports and 2 combo SFP ports | 48 x 10/100/1000 PoE ports and 4 x 10/100/1000 SFP ports | 8 PoE ports with 2 combo uplink ports | 24 PoE ports, 4 combo SFP ports | 8 x 10/100 PoE ports |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco SG300-20 Managed Switch | Cisco SG300-52MP 52-Port Gigabit PoE Managed Switch | Cisco Small Business SG300-10PP | Cisco Small Business SG300-28MP | Cisco Small Business SF302-08P 8-Port PoE Smart Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | No | No |
| Switching Capacity | 28 Gbps | 104 Gbps | 20 Gbps | 56 Gbps | 1.6 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 1G | 1G |
| Weight | 9 lbs | 16 lbs | 7.5 lbs | 7.7 lbs | 4.6 lbs |
| Width | 17.5 inches | 17.3 inches | 8.66 inches | 17 inches | 8.66 inches |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
F
Fiona Brooks
5
18-port gigabit smart switch with combo mini-GBIC ports ensures stable connectivity for mid-sized networks.
G
Gideon Parker
5
Professional-grade switch delivering consistent throughput and minimal latency.
H
Hannah Kim
5
Easy to deploy with reliable network performance for office environments.
I
Isaac Chen
5
Durable and efficient, perfect for small-to-medium office setups.
J
Jade Morgan
4
Stable and dependable performance for daily networking tasks.
Questions & Answers
What is the Cisco SG300-20 switch?
The Cisco SG300-20 is a fully managed small-business switch featuring 18 Gigabit Ethernet ports and 2 combo mini-GBIC slots for fiber uplinks, designed for secure, scalable network deployment.
How many 10/100/1000 ports does the SG300-20 offer?
The SG300-20 provides 18 10/100/1000 Mbps RJ-45 ports for high-speed copper connectivity, ideal for bandwidth-intensive applications.
What are the combo mini-GBIC ports used for?
The SG300-20’s two combo mini-GBIC ports support SFP modules for fiber or copper uplinks, extending network reach up to dozens of kilometers.
Does the SG300-20 support Layer 3 routing?
Yes, the SG300-20 includes static and RIP routing features, enabling inter-VLAN routing and simplified traffic segmentation at Layer 3.
How do I manage the SG300-20 switch?
You can manage the SG300-20 via its web-based GUI, Cisco Network Assistant, or Command-Line Interface (CLI) over SSH or console port for full configuration control.
What security features are available on the SG300-20?
The SG300-20 offers 802.1X port-based authentication, Access Control Lists (ACLs), Storm Control and DHCP snooping to protect against unauthorized access and attacks.
Can I configure VLANs on the SG300-20?
Absolutely. The SG300-20 supports up to 256 VLANs with 4,094 VLAN IDs, enabling network segmentation, traffic isolation and better broadcast control.
What quality of service (QoS) capabilities does it have?
The SG300-20 delivers advanced QoS with 8 hardware queues, DSCP/802.1p priority mapping and WRR scheduling to ensure optimal voice, video and data delivery.
Is the SG300-20 energy efficient?
Yes, it incorporates Energy Efficient Ethernet (IEEE 802.3az) and smart power-down idle links to reduce power consumption and operational costs.
Does the SG300-20 support link aggregation?
The switch supports up to 12 Link Aggregation Control Protocol (LACP) groups with 8 ports per group for increased bandwidth and redundancy.
What is the switching capacity of the SG300-20?
The SG300-20 delivers a switching capacity of 52 Gbps and a forwarding rate of 38.69 Mpps to handle heavy traffic loads without bottlenecks.
Is the SG300-20 fan-less?
No, the SG300-20 includes a single, low-noise fan for efficient cooling, making it suitable for office and wiring-closet environments.
Can I rack-mount the SG300-20?
Yes, the SG300-20 ships with rack-mount brackets and fits in a standard 19-inch equipment rack, occupying 1RU of space.
What warranty and support does Cisco provide?
Cisco offers a limited lifetime hardware warranty and free technical support for the SG300-20, backed by its global small business service network.
Which SFP modules are compatible with the SG300-20?
The SG300-20 accepts Cisco mini-GBIC SFP modules including 1000BASE-SX, LX/LH, ZX, and copper GLC-TE for varied fiber and Gigabit copper connections.