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Dahua SG4020 20-Port Managed Gigabit Switch

Product "Dahua SG4020 20-Port Managed Gigabit Switch"

Dahua SG4020 is a managed (L2) 20-port Gigabit switch (no PoE): 18× 10/100/1000 Mbps RJ45 ports and 2× 1000M SFP fibre slots. Managed through a web interface; 56 Gbps switching capacity, fanless housing.

Key Advantages and Features:

  • 18 Gigabit ports: 18× 10/100/1000 Mbps auto-negotiating RJ45 ports.
  • 2 SFP fibre slots: 2× 1000M SFP uplinks for long fibre backbone connections.
  • L2 web management: Web-based management: VLAN, STP/RSTP.
  • Link aggregation: Manual aggregation and static LACP for throughput and redundancy.
  • High throughput: 56 Gbps switching capacity for a full-gigabit network.
  • Fanless metal housing: Silent all-metal housing with good heat dissipation, operates −10...+55 °C.

Technical Specifications:

ParameterSpecification
Ports18× 10/100/1000 RJ45 + 2× 1000M SFP
PoENo (non-PoE)
Switching capacity56 Gbps
MAC table8K
ManagementManaged L2, web interface
Network functionsVLAN, STP/RSTP, link aggregation (LACP)
ConsoleConsole port (RJ-45) for management
HousingFanless, all-metal
Operating temperature−10 °C to +55 °C

Best suited for: a full-gigabit backbone or distribution switch where PoE is not needed but managed features (VLAN segmentation) and SFP fibre connectivity are required. Fanless and silent. The case carries the manufacturer's label „16-Port Gigabit Managed Switch“ — ports 1–16 form the main block and 17–18 are separate uplinks, so there are 18 RJ45 ports in total. The front panel says as much: Port 1-16 and Port 17-18 are 10/100/1000Base-T, Port 19-20 are 1000Base-X (SFP).

Properties "Dahua SG4020 20-Port Managed Gigabit Switch"
PoE: Without PoE
Ports: 18
Port speed: Gigabit
Datasheets
Tooteleht (PDF)

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Manufacturer "Dahua"

Dahua Technology – Enabling a Safer Society and Smarter Living

Dahua Technology is a world-leading video-centric AIoT (Artificial Intelligence of Things) solution and service provider. Dedicated to technological innovation, Dahua offers reliable security systems and smart video solutions tailored for residential users, commercial enterprises, and the public sector alike.

Why Choose Dahua?

  • Cutting-Edge Innovation: Dahua invests heavily in Research & Development (R&D) each year, consistently bringing highly accurate AI-driven video surveillance technology to the global market.

  • Comprehensive Security Ecosystem: Their extensive product portfolio includes high-resolution IP and analog cameras, smart video recorders, access control systems, video intercoms, intrusion alarms, and smart home solutions.

  • Proven Global Reliability: Trusted in over 180 countries, Dahua products are renowned for their exceptional build quality, outstanding image clarity, and user-friendly operation.

Through continuous innovation and world-class video technology, Dahua helps create a safer environment and streamlines daily operations for businesses and communities worldwide.

Videovalve is Dahua's official distributor in Estonia. See Dahua's official partner list (dahuasecurity.com)

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