Unmanaged PoE Switches

Our Unmanaged PoE Switches category offers plug-and-play solutions for surveillance, VoIP, and wireless access points. Featuring affordable unmanaged PoE switch for cameras and basic PoE switch for surveillance models, these switches provide reliable power and data over a single cable. As a factory manufacturer, Wanglink delivers cost-effective 8/16/24-port options with no configuration needed.

Explore All Unmanaged PoE Switches

Unmanaged PoE Network Switch 4 Port Fast Ethernet, 2 Uplink RJ45, 1 Fiber Port, 250m Extend Mode, VLAN Isolation, Desktop/Wall Mount

4-port PoE network switch with 2 uplink RJ45 and 1 fiber port, 250m long-distance mode, VLAN isolation, plug-and-play, ideal for IP cameras and small business networks.

SF421P
Port Description

4 PoE ports (10/100M) + 2 uplink ports (10/100M) + 1 fiber port (100M)
  • 4 PoE ports (25.4W per port) auto-detect PDs to protect non-PoE gear
  • One DIP switch enables 250m transmission at 10 Mbps on ports 1-4
  • VLAN isolation on ports 1-4 prevents broadcast storms, improves network stability
  • 1 fiber uplink port (155M) for long-distance backbone connection
  • Plug-and-play with zero configuration – ideal for non-technical setups
  • Metal housing with internal power supply for reliable heat dissipation









Practical PoE Network Switch for Surveillance & SME Networks

If you’re deploying a few IP cameras or extending network coverage in a small office, this 4-port PoE network switch is built to handle the job without extra configuration. It delivers power and data over a single Ethernet cable to devices like cameras, access points, and VoIP phones, cutting down on wiring mess and outlet needs. The switch auto-detects PoE equipment, so plugging in a standard laptop won’t damage it — a simple safeguard that saves headaches.

The standout feature is the Extend mode toggle: flipping the DIP switch forces ports 1–4 to 10 Mbps, stretching twisted-pair transmission up to 250 meters. For surveillance setups where cameras sit far from the switch (parking lots, warehouses, long hallways), this removes the need for extra extenders or fiber runs. Meanwhile, VLAN mode isolates ports 1–4 from each other, limiting broadcast storms and keeping traffic between cameras separate — useful when you want to avoid a single device flooding the whole network.

With a metal enclosure and internal power supply, the switch runs cool and steady even in non-ventilated enclosures. Installation is truly plug-and-play: mount it on a desk or wall, connect power and cables, and it works. No web GUI, no IP setup, no stress. That matters for IT managers who don’t want to waste time on basic infrastructure, or for small business owners who just need reliable connectivity.

Designed for hotels, retail stores, supermarkets, and SMEs, this PoE network switch balances cost, simplicity, and real-world performance — especially where long-distance PoE and traffic isolation are needed.

Technical Specifications

Standards: IEEE 802.3 10Base-T, 802.3u 100Base-TX, 802.3z 100Base-SX/LX, 802.3af/at PoE, 802.3x flow control
Ethernet Ports: 4× 10/100Base-TX PoE (RJ45) + 2× 10/100Base-TX uplink (RJ45) + 1× 100Base-X fiber
PoE Pin Assignment: 1/2+, 3/6-
Max PoE Power per Port: 25.4W (30W port max rate)
Total PoE Budget: ≤65W (standby ≤3W)
Switch Capacity: 1.4 Gbps non-blocking
Packet Forwarding Rate: 1.0416 Mpps@64byte
MAC Address Table: 2K
Packet Buffer: 768 Kb
Jumbo Frame: 2048 bytes
Transmission Distance: 100 m (100Base-TX), 250 m (10Base-T in Extend mode)
DIP Switch: Standard mode (all ports communicate) / Extend mode (ports 1-4 isolated, 250m reach, communicate with ports 5-6)
Surge Protection (optional): 6KV common-mode / 4KV differential-mode
AI Watchdog (optional): Network self-recovery
LED Indicators: Power, Ethernet per port, Extend mode
Input Voltage: AC 100~240V, 50Hz
Power Consumption: ≤3W (standby), ≤65W (full load)
Operating Temperature: -20°C to 60°C
Storage Temperature: -40°C to 85°C
Operating Humidity: 5% to 95% non-condensing
Cooling: Natural heat dissipation
Dimensions: 201 mm × 140 mm × 44 mm
Weight: 0.7 kg
Installation: Desktop or wall-mount
Enclosure: Metal


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