# Managed Switch Dahua Technology SG4020 L2 Gigabit Ethernet 18 Ports

**URL:** https://aio.lv/en/product--dahua-sg4020--11617725
**Data updated:** 2025-12-31 08:59 (EET)
**Category:** Network Switches
**Manufacturer:** DAHUA
**Manufacturer code:** SG4020
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 122.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 101.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dahua-sg4020--11617725

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 01.07.2026 | 1.89 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

The Dahua Technology SG4020 is a managed L2 switch with 18 Gigabit Ethernet ports, full duplex, and a switching capacity of 56 Gbit/s. It supports various networking standards and is designed for efficient network management.

## Long description

The Dahua Technology SG4020 L2 Gigabit Ethernet Managed Switch is an 18-port, full-metal, fanless network switch designed for reliable wired networks. It offers 18 Gigabit RJ-45 ports with 10/100/1000 Mbps auto-negotiation, full-duplex support and a switching capacity of 56 Gbit/s. The switch operates in temperatures from -10°C to 55°C and includes protections for overvoltage, EMC and overcurrent on the power input to resist static, lightning and pulse interference.
Advantages
The SG4020 delivers low transmission delay, large buffers and strong switching capability to optimize delivery of high-bandwidth streams such as Ultra HD video. Its fanless, full-metal design provides effective heat dissipation and low power consumption while reducing noise and mechanical wear. Managed L2 features and web-based management enable centralized configuration and troubleshooting, and hardware protections improve reliability in industrial or demanding environments.
Suitable for
Small and medium business wired networks
Surveillance systems and Ultra HD video distribution
Edge and branch office network aggregation
Environments requiring quiet, fanless operation
Key specifications
Model: Dahua SG4020
Switch type: Managed L2
Ports: 18 × Gigabit Ethernet RJ-45 (10/100/1000 Mbps, auto-negotiation)
Console port: RJ-45
Switching capacity: 56 Gbit/s
MAC address table: 8000 entries
Management: Web-based L2 management, LLDP, STP/RSTP, IGMP Snooping
Features: Link Aggregation (manual and static LACP), QoS
Form factor: 1U rack-mountable
Power: DC power supply included; input protections for overvoltage, EMC and overcurrent
Operating temperature: -10°C to 55°C
Colour: Black
Weight: 1.57 kg
How to use
Install the SG4020 in a standard 1U rack or place it on a flat surface. Connect each network device to the Gigabit RJ-45 ports using Cat5e or better cabling. Use the console or web-based interface to configure VLANs, Link Aggregation, QoS policies, STP/RSTP and IGMP Snooping according to network requirements. Ensure the DC power supply is connected to a properly rated source and verify grounding to maintain protection against electrical interference.
Usage recommendations
For optimal performance when distributing Ultra HD video or large multicast streams, enable IGMP Snooping and configure QoS and Link Aggregation where multiple uplinks exist. Use Cat6 cabling for future-proofing and ensure regular firmware updates via the vendor to maintain security and stability.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| Gigabit Ethernet (copper) ports quantity | 18 |
| Console port | RJ-45 |
| Basic switching RJ-45 Ethernet ports type | Gigabit Ethernet (10/100/1000) |
| Basic switching RJ-45 Ethernet ports quantity | 18 |
| SFP module slots quantity | 2 |

### Management features

| Feature | Value |
|---|---|
| Switch layer | L2 |
| Quality of Service (QoS) support | Yes |
| Web-based management | Yes |
| Switch type | Managed |
| Cloud-managed | No |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |

### Power over Ethernet (PoE)

| Feature | Value |
|---|---|
| Power over Ethernet (PoE) | No |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 90 |
| Storage temperature (T-T) | -40 - 75 |
| Operating temperature (T-T) | -10 - 55 |
| Storage relative humidity (H-H) | 5 - 95 |

### Power

| Feature | Value |
|---|---|
| Power source | DC |
| DC input voltage | 12 |
| Power consumption (max) | 24 W |
| Power supply included | Yes |

### Design

| Feature | Value |
|---|---|
| Rack mounting | Yes |
| Form factor | 1U |
| LED indicators | Y |
| Product colour | Black |
| Reset button | Yes |

### Data transmission

| Feature | Value |
|---|---|
| MAC address table | 8000 entries |
| Switching capacity | 56 Gbit/s |
| Jumbo frames support | Yes |
| Forwarding rate | 29.76 Mpps |
| Packet buffer memory | 4.1 MB |
| Jumbo frames | 10000 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 2250 g |
| Package depth | 520 mm |
| Package height | 107 mm |
| Package width | 271 mm |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.57 kg |
| Height | 43.65 mm |
| Width | 163.85 mm |
| Depth | 440 mm |

### Performance

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 467125.73 h |
| Fanless | Yes |

### Network

| Feature | Value |
|---|---|
| Full duplex | Yes |
| Networking standards | IEEE 802.3ab, IEEE 802.3z, IEEE 802.3x, IEEE 802.3u, IEEE 802.3ad, IEEE 802.3, IEEE 802.1x |
| Flow control support | Yes |
| Link aggregation | Yes |
| Ethernet LAN data rates | 10, 100, 1000 |
| Number of VLANs | 4000 |
| Spanning tree protocol | Yes |
| VLAN support | Yes |
| 10G support | No |
| Copper ethernet cabling technology | 1000BASE-T, 100BASE-TX, 10BASE-T |
| Virtual LAN features | Tagged VLAN, Port-based VLAN |

### Multicast features

| Feature | Value |
|---|---|
| Multicast support | Yes |

### Security

| Feature | Value |
|---|---|
| IGMP snooping | Yes |
| DHCP features | DHCP snooping, DHCP server, DHCP client |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CE |

## FAQ

### How much does the Managed Switch Dahua Technology SG4020 cost, and is it available for purchase?

The price is 122.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Friday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Managed Switch Dahua Technology SG4020 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All DAHUA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized DAHUA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: basic switching rj-45 ethernet ports type, switch type, weight, basic switching rj-45 ethernet ports quantity, 10g support, networking standards, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Managed Switch Dahua Technology SG4020?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11617725/66843294_large.webp