Phone: +86-0755-89314527
E-mail: [email protected]
Address: 2rd Floor, Building B, Hongmen Industrial Park, Shenzhen, Guangdong, China

SF421P | Unmanaged 10/100mbps 4 Port PoE Switch with Fiber Uplink

Enhance your network with our 4 port PoE switch, featuring 4 PoE ports and fiber connectivity, perfect for powering IP cameras and ensuring seamless integration.

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PoE Switch Overview

Upgrade your network with our 4 Port PoE Switch, a high-performance solution combining Power over Ethernet (PoE) and fiber connectivity. This 4 port PoE switch features 4 IEEE802.3af/at PoE ports, 2 uplink Ethernet ports, and 1 fiber port, delivering up to 25.4W per PoE port and a total PoE power output of 65W. Perfect for powering IP cameras, VoIP phones, and other PoE devices, this 4 port PoE switch with fiber uplink ensures seamless integration and extended network reach.

Key Features:

  • 4 Port PoE Switch: 4 PoE ports (Ports 1-4) and 2 uplink Ethernet ports for flexible network expansion.
  • 4 Port PoE Switch with SFP: 1 fiber port supports transmission distances up to 120km, ideal for long-range networking.
  • PoE Network Switch 4 Port: Automatically detects and powers compatible PoE devices, protecting non-PoE devices from damage.
  • 4 Port Unmanaged PoE Switch: Plug-and-play design with no configuration required, perfect for small to medium networks.
  • 4 Port PoE Switch for CCTV: Ideal for video surveillance in hotels, shops, supermarkets, and homes.
  • 250m Long-Distance Mode: Extend transmission distances up to 250m by reducing the port speed to 10Mbps.
  • VLAN Mode: One-key VLAN support isolates broadcast domains, reducing network congestion and improving efficiency.
  • Industrial-Grade Durability: Metal casing, excellent heat dissipation, and optional 6KV surge protection for enhanced reliability.
  • AI Network Self-Healing: Optional watchdog function ensures uninterrupted network performance.

Why Choose Our 4 Port PoE Switch?

  • Best 4 Port PoE Switch: Combines affordability with enterprise-grade performance.
  • PoE Powered Switch 4 Port: Simplifies installation by delivering power and data over a single Ethernet cable.
  • 4 Port PoE Gigabit Ethernet Switch: Supports 10/100Mbps auto-negotiation and full/half-duplex modes for efficient data transfer.
  • Unmanaged PoE Switch: Easy to deploy, making it perfect for non-technical users.

Whether you need a 4 port PoE switch for IP cameras, a 4 port industrial PoE switch, or a 4 port PoE gigabit switch, our solution ensures reliable performance and scalability. Upgrade your network today with the best 4 port PoE switch on the market!

WL-SF421P Datasheet

ProtocolStandardIEEE802.3 10Base-TIEEE802.3u 100Base-TXIEEE 802.3x  Flow control
Fiber Port CharacteristicConnector TypeSC/ST/FC
Transmission rate155Mbps
Transmission distance550m/2km/20km/40km/60km/80km/100km/120km
Ethernet port CharacteristicConnector Type1×4RJ45,1×2 RJ45
Transmission rate10/100Mbps auto-negotiate;
Transmission distance10Base-T: ≤250m(CAT3,4,5 UTP)100Base-TX: ≤100m(CAT3,4,5 UTP)
Exchange performanceForward methodStore-and-forward(full wire-speed)
Transmission modeHalf/Full duplex adaptive
MAC address table2K
Case space768Kb
Jumbo frames2048b
Packet Forwarding Rate1.1904Mpps@64byte
Bandwidth1.6G(non-blocking)
LED indicatorPower indicatorGreen, PWE
Ethernet indicatorGreen, per ethernet port
Fiber indicatorGreen, per fiber port
DIP switch indicatorGreen, extend mode.
DIP switch100mStandard mode – All ports can communicate with each other.
250mExtend mode, port 1-4 are isolated from each other, transmission distance can up to 250m, and can communicate with port 5-6.
Power parametersInput voltageAC100~240V, 50Hz
Power consumptionStandby: ≤4W; whole: ≤65W
PoE pin1/2+,3/6-
The port max rate≤25.4W
EnvironmentOperating Temperature-20℃~60℃
Storage Temperature:-40℃~85℃
Operating Humidity5%~95% non-condensing
Heat dissipation methodNatural heat dissipation
Physical propertiesSize305×182×44mm
WeightNet weight:2.0kg,Gross weight: 2.2kg

Product size

Product size: SF421P | Unmanaged 10/100mbps 4-Port-PoE-Switch mit Fiber Uplink

Application

Application: SF421P | Unmanaged 10/100mbps 4-Port-PoE-Switch mit Fiber Uplink
Product size: SF421P | Unmanaged 10/100mbps 4-Port-PoE-Switch mit Fiber Uplink
Application: SF421P | Unmanaged 10/100mbps 4-Port-PoE-Switch mit Fiber Uplink
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CLXLINK, based in Shenzhen, China, was founded in 2024 by five industry veterans with over a decade of experience in communications equipment. The company has secured exclusive rights as the sole distributor for Wanglink, handling all business affairs related to Wanglink.


We operate our own product design and R&D studio, Caeluris, led by Dr. Yuan, a top expert in the POE switch field. To date, we have developed over 1,000 mature products and have completed more than 15,000 customized solutions for a diverse range of domestic and international clients.


Customer-centric and committed to excellence, we offer comprehensive technical support and industry-leading services. Leveraging Caeluris’ robust R&D capabilities alongside Wanglink’s manufacturing resources, we provide a one-stop solution for productcustomization, design, packaging, production, and shipping.


We welcome you to contact us!

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Leading R&D capabilities

The professional R&D and testing team led by Dr. Yuan is able to realize any customized requirements for our existing R&D products and special fields.

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Powerful productivity

Wanglink, as our cooperative factory, will provide us with the highest priority order production and price support from the source.

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Top-notch customer service

All of our foreign trade elites have good listening, speaking, reading and writing skills, and a meticulous and serious work attitude.

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