Please allow ~2-3 weeks to dispatch for quality control. Product images are for illustrative purposes only and may contain AI-generated content; they may not represent the final product you receive. Products are subject to the cosmetic grading policy detailed here.
If you are ordering a device that does not include a Windows 11 licence as standard, please check Microsoft's minimum system requirements to confirm if it can be upgraded later should you wish to do so.
Certified Refurbished Cisco SG300-28 Managed Gigabit Switch with Layer 3 Routing
The Cisco SG300-28 (SRW2024-K9) is a 28-port managed Gigabit Ethernet switch featuring 24 x 10/100/1000 Mbps RJ45 ports and 2 combo Gigabit SFP/RJ45 ports, 56 Gbps switching capacity, Layer 2/Layer 3 static routing capabilities, 128 MB RAM, 16 MB flash memory, and 440 x 257 x 44.45 mm rack-mountable 1U design weighing 3.28 kg. This certified refurbished enterprise-grade switch delivers advanced network management, quality of service (QoS), and robust security features perfectly suited for small to medium-sized business environments demanding reliable high-performance networking infrastructure.
Ideal Business Applications
This managed switch excels in environments requiring segmented network traffic with VLAN support for up to 256 virtual LANs, making it perfect for businesses that need to separate voice, data, and wireless traffic across departments. The Layer 3 static routing capability allows seamless communication between VLANs without degrading application performance, whilst the advanced QoS features prioritise critical business applications and unified communications. Small businesses adding enterprise-grade wireless access points benefit from the switch's Power over Ethernet readiness through its combo ports and advanced security features including 802.1X authentication, MAC address filtering, and SSH/SSL support.
Key Features & Benefits
- High-Performance Connectivity: 24 Gigabit Ethernet ports plus 2 combo SFP/RJ45 uplinks deliver 56 Gbps switching capacity for bandwidth-intensive applications
- Advanced Layer 3 Routing: Static IPv4 routing between VLANs with support for 32 routing entries enables intelligent traffic management
- Enterprise Security: 802.1X authentication, RADIUS/TACACS+ support, ACLs, and SSH/SSL encryption protect your network infrastructure
- Comprehensive VLAN Support: Up to 256 simultaneous VLANs with port-based, 802.1Q tag-based, and MAC-based VLAN configurations
- Quality of Service: Advanced QoS capabilities prioritise voice, video, and critical business applications
- Energy Efficient Design: Fanless operation consuming just 30.1W typical power with automatic port power shutoff when links are down
- Flexible Management: Web-based GUI and advanced CLI options simplify configuration and ongoing network administration
- Jumbo Frame Support: 10 KB jumbo frames optimise large data transfers and reduce CPU overhead
- Robust Build Quality: Rack-mountable 1U metal chassis designed for desktop or rack installation
- IPv6 Ready: Full IPv6 protocol support future-proofs your network investment
Technical Specifications
- Total Ports: 28 (24 x Gigabit RJ45 + 2 x Combo Gigabit SFP/RJ45)
- Switching Capacity: 56 Gbps
- MAC Address Table: 8,000 entries (supports up to 16K on some firmware versions)
- Data Transfer Rate: 10/100/1000 Mbps auto-sensing per port
- Memory: 128 MB RAM, 16 MB Flash
- Dimensions: 440 x 257 x 44.45 mm (W x D x H)
- Weight: 3.28 kg
- Power Consumption: 30.1W typical, AC 100-240V @ 47-63Hz
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- MTBF: 179,141 hours
- Standards Compliance: IEEE 802.3, 802.3ab, 802.1s, 802.1w, 802.1X
Verified Reboot Refurb Quality Assurance
Every Cisco SG300-28 switch undergoes Reboot IT's rigorous Verified Reboot Refurb testing process, ensuring all 28 ports, management interfaces, routing functions, and security features operate flawlessly. As networking experts since 2001, Reboot IT employs cutting-edge diagnostic software to thoroughly validate each switch's switching capacity, VLAN configuration, QoS performance, and firmware integrity before certification. All units are comprehensively tested to meet strict operational standards, guaranteeing reliable performance for your business network.
Cosmetic Grading Standards
Reboot IT's certified refurbished switches are available in two cosmetic grades to suit different budgets whilst maintaining identical performance standards. Excellent Grade switches show minimal signs of previous use with only very minor scuffing or light abrasions on the metal chassis from standard handling, whilst maintaining pristine port conditions. Good Grade units are fully functional but may display more visible wear including light scratches on the external housing, minor paint chips, or small dings from previous rack installation, though all ports and functionality remain perfect. Regardless of cosmetic grade, every switch delivers the same enterprise-level performance and reliability.
Warranty & Support
This certified refurbished Cisco SG300-28 switch is sold by Reboot IT and includes a comprehensive 1 year warranty covering all hardware components and functionality. Reboot IT has established itself as Australia's trusted refurbished technology specialist since 2001, providing expert support and quality assurance for business networking equipment.
Upgrade your network infrastructure today with this enterprise-grade certified refurbished Cisco SG300-28 managed switch – delivering professional performance, advanced features, and exceptional value for your growing business.
| Manufacturer Warranty | 3 Months |
| Number Of Lan Ports | 28 |
| Maximum Lan Data Rate | 1000 Mbps/1 Gbps |
| Item Height | None |
| Maximum Data Transfer Rate | 1 Gbps |
| Custom Bundle | No |
| Network Connectivity | Wired-Ethernet (RJ-45) |
| Item Width | None |
| Condition | A |
| Ethernet Technology | Gigabit Ethernet (1000-Mbit/s) |
| Model | SG300-28 |
| Layer | None |
| Type | Catalyst Switch |
| Network Type | Catalyst Switch |
| Network Management Type | Fully Managed |
| Processor Model | none |
| Supported Wireless Protocols | None |
| Number Of Wan Ports | None |
| Device Connectivity | None |
| Interface | Ethernet (RJ-45) |
| Connector Type | None |
| Raid Levels | None |
| Item Length | None |
| Brand | Cisco |
| Form Factor | Standalone |
| Product Line | none |
| Bundle Description | None |
Refurbished Computers - Cosmetic Grading Guide
Our supplier's refurbished hardware is typically graded either "Excellent" or "Good", however, some legacy products were graded under a letter grading system (A, B, C). Please find the definitions for each grade below and contact us if you're uncertain of a device's grade.
Used Smartphone / Refurbished Mobile Phones
"Excellent" Grade
Devices in this category appear like new, with very minor wear. Expect light or fine scratches on the screen that are shallow enough not to catch on a fingernail. The edge around the glass is virtually flawless, save for possible light scratching around the power port. The back plate may show light/fine scratches, including on the Apple logo, with any discoloration being minimal.
"Good" Grade
These devices are characterized by being fully tested and functional even if they have body scratches, minor paint chips, or a small hairline crack on the screen. Screens are free from dead pixels but may exhibit slight scratching from moderate use.
Refurbished Desktops, Laptops and Monitors
"Excellent" Grade - Laptops
Reserved for units that show barely any signs of previous use, these laptops may exhibit very minor scuffing or abrasions, associated only with minimal standard use. The keyboards show light wear, and importantly, the screens are pristine, free from any scratches, cracks, chips, dead pixels, dark spots, discoloration, or blemishes.
"Excellent" Grade - Desktops
Desktop PCs in the "Excellent" grade category are free from deep scratches, cracks, paint chips, or any broken/missing pieces, ensuring a sleek and almost-new aesthetic.
"Excellent" Grade - Monitors
"Excellent" grade is reserved for units that show evidence of very little to no previous use. Any wear on an "Excellent" Display, including housing/frame and/or external surfaces (i.e. Frame) is associated with standard minimal use. "Excellent" units may have minor scuffing and / or minor abrasions on plastics with from standard light previous use."Excellent" Displays will feature no scratches, cracks, chips, dead pixels, dark spots, discoloration or blemishes. Units will only feature the standard minimal wear and tear that is associated with a used unit.
"Good" Grade - Laptops
"Good" laptops may feature one or several small dings or dents on covers and / or small paint chips on the surface or small hairline cracks in the bezel. Laptop screens may feature uneven light diffusion in screen and may feature subtle blemishes. "Good" Laptops will not feature cracks screens but may feature slight scratching, dead pixels or white spots on the screen.
"Good" Grade - Desktops
"Good" grade desktops may have light scratches on external body and may feature more excessive unit housing and/or external case wear than "Excellent" units, including wear on case / lid. "Good" PCs may feature one or several small dings or dents on covers and / or small paint chips on the surface.
"Good" Grade - Monitors
Displays in the "Good" grade have been fully tested and are functional but may include scratches on body, small paint chips, minor cracks on body, loose and/or wobbly bases. "Good" Display screens may feature uneven light diffusion in screen and may feature subtle to moderate blemishes. "Good" Displays will not feature cracks on screens but may feature slight scratching on screen surfaces from moderate use or wear, dead pixels or white spots on the screen.
Legacy letter grading
Used Smartphone / Refurbished Mobile Phones
A Grade
- No chips, scratches or cracks on the front glass and housing
- No missing or alternative parts
- No sign of liquid damage
- Battery cannot be swollen
B Grade – Same as A Grade except:
- May have light scuffs but no chips or cracks
- Light scratches on housing or front glass
C-Grade – Same as B Grade except:
- Unlimited long shallow scratches on the front glass
- No chips or cracks on the front glass
- Unlimited scratches, chips/dents on back cover housing and corners
- Minor cracks allowed
- Customized housing and aftermarket covers allowed
Refurbished Desktops, Laptops and Monitors
A-Grade
- Overall excellent to very good cosmetic condition. Some may be pristine, others may have light scratches or minor blemishes
- Laptops may have some shiny areas around the keyboard such as the space bar, touchpad or touchpad buttons
- Keyboard keys will be in excellent condition
- Laptop and monitor screens will be blemish free
- Cosmetic blemishes will not impact the overall functionality or performance of the device
B-Grade
- Will have some cosmetic blemishes that include scratches and/or other imperfections
- Minor scratches and dents on the housing
- Laptops may have shiny keys or shiny surfaces around the keyboard however all characters will be legible
- Laptop and monitors screens will have imperfections such as minor scratches, minor chips and/or white spots. There will be no cracking on the screen
- Have the same warranty as A Grade
- Pricing will be cheaper than A Grade
C-Grade
- Same as B-Grade except may have unlimited scratches/blemishes on the screen
- May have cracks/chips or dents on the housing
- Have the same warranty as A Grade
- Pricing will be cheaper than B Grade
