LT-ASG0421V  4+2+1 Port Gigabit Unmanaged PoE Switch

The LT-ASG0421V is an unmanaged PSE PoE switch from NEWBRIDGE® designed for small surveillance and network applications requiring Gigabit speeds. It features 4× 10/100/1000Mbps Gigabit PoE ports (IEEE 802.3af/at, up to 30W per port), 2× 10/100/1000Mbps Gigabit uplink RJ45 ports, and 1× 1000Mbps SFP slot – all 7 ports work simultaneously. With a total PoE budget of 65W, built‑in intelligent PoE priority mechanism, watchdog on ports 1‑4 (auto‑restarts unresponsive devices after 2 minutes), OVP (Over Voltage Protection), short‑circuit protection, 4KV lightning protection on both ports and power supply, 250‑meter long‑range transmission (reduces ports 1‑4 to 10Mbps), and VLAN isolation mode (isolates ports 1‑4 from each other while keeping communication with uplink ports). Housed in a fanless galvanized steel metal case, this plug‑and‑play switch is ideal for IP cameras, VoIP phones, and wireless APs in home or small office environments where Gigabit uplink and fiber flexibility are desired.

Key Features

🔌 Gigabit PoE+ with 65W Budget, Priority & Protections

• 4× Gigabit PoE ports – IEEE 802.3af/at compliant, up to 30W per port, total PoE budget 65W.

• Intelligent PoE priority mechanism – when remaining power is low, high‑priority ports are guaranteed power to prevent overload.

• OVP (Over Voltage Protection) – safeguards the switch and connected devices from voltage spikes.

• Short‑circuit protection built‑in for safe operation.

• 4KV lightning protection on both PoE ports and power supply.

🔁 Watchdog Auto‑Recovery (Ports 1‑4)

• Continuously monitors data communication status on all 4 PoE ports.

• If a connected camera or device stops working for 2 minutes, the corresponding port automatically restarts to restore operation – no manual intervention needed.

🌐 Gigabit Uplink & SFP Fiber Slot

• 2× 10/100/1000Mbps RJ45 uplink ports for high‑speed connection to NVRs or core switches.

• 1× 1000Mbps SFP slot – allows fiber uplink (multi‑mode or single‑mode, distance up to 100km depending on module), providing flexible long‑distance backbone connectivity.

📡 Long‑Range & VLAN Mode (DIP Switch)

• Long‑Range Mode: Reduces ports 1‑4 to 10Mbps, extending transmission distance up to 250 meters over standard Cat5e/6 cable.

• VLAN Mode: Isolates ports 1‑4 from each other (they only communicate with uplink ports 5‑6), reducing broadcast storms and preventing DHCP conflicts.

⚡ High‑Performance Switching

• 4× Gigabit PoE ports + 2× Gigabit uplink + 1× Gigabit SFP, all support non‑blocking wire‑speed forwarding.

• Switching capacity: 14Gbps; throughput: 10.416Mpps; MAC table: 2K; packet buffer: 1M.

• Supports IEEE 802.3x flow control and backpressure.

🔌 Plug‑and‑Play & Reliable Hardware

• No configuration required. LED indicators for power (PWR), link (Link), PoE status, and extend mode.

• Fanless silent design, galvanized steel metal shell, excellent heat dissipation.

• Operating temperature: 0℃～55℃; storage: -40℃～70℃.

Technical Specifications