G403C d-link router

D‑Link G403C – 4G LTE N300 Wi‑Fi Router

4G LTE Connectivity • N300 Wi‑Fi • WAN Failover • Enhanced Security

The D‑Link G403C is a versatile 4G LTE router designed for homes and small offices that need reliable, cable‑free Internet access. With LTE Cat 4 speeds, N300 Wi‑Fi, WAN failover, and enhanced security certifications, it delivers stable connectivity and peace of mind — even in areas without traditional broadband.

Key Features

• 4G LTE Cat 4 Connectivity

• Up to 150 Mbps downlink

• Up to 50 Mbps uplink

• Easy, Cable‑Free Setup

• Insert a SIM card for instant Internet access

• WAN Failover

• Automatically switches to backup WAN if LTE or primary connection fails

• N300 Wi‑Fi Speeds

• Up to 300 Mbps on 2.4 GHz for browsing, email, and social media

• Enhanced Coverage

• 5 dBi external antennas for stronger LTE and Wi‑Fi signals

• Advanced Security

• WPA3 encryption

• Guest Wi‑Fi

• EN18031 & IEC 62443‑4‑1 certified

• Ideal for homes, small offices, rural areas, and backup Internet setups

Wireless & Radio Specifications

Wi‑Fi Standard

• IEEE 802.11b/g/n (2.4 GHz)

Wireless Speeds

• 2.4 GHz: up to 300 Mbps

Antenna System

• 2 × 2.4 GHz WLAN fixed external antennas

• 2 × 4G LTE/3G fixed external antennas

4G LTE Data Rates

• LTE Cat 4:

• 150 Mbps DL / 50 Mbps UL

• HSPA+:

• 21 Mbps DL / 5.76 Mbps UL

Frequency Support

• LTE: B1/B3/B5/B7/B8/B20/B28/B38/B40/B41

• WCDMA: B1/B5/B8

• GSM: 900/1800

Hardware & Interfaces

Ports

• 3 × Fast Ethernet LAN ports

• 1 × Fast Ethernet WAN/LAN port

• 1 × Nano SIM slot (4FF)

• 1 × Power connector

Buttons

• Power button

• Reset button

• WPS button

LED Indicators

• Power

• Internet / Status

• WAN

• LAN

• LTE/3G

• Wi‑Fi

• WPS

Security & Firewall

Firewall Features

• Stateful Packet Inspection (SPI)

• Anti‑spoofing checking

• IP/MAC address filtering

• Port forwarding

• Virtual server

• DMZ

• VPN pass‑through

Wireless Security

• WPA3

• WPA2‑AES

• Guest Wi‑Fi

Device Management

• Web UI for configuration and monitoring

Certifications

• CE

• NCC

• RCM

• RoHS

Use‑Case Clarity

Ideal For

• Homes without fixed broadband

• Rural or remote locations

• Small offices needing backup Internet

• Temporary setups (events, pop‑up shops)

• Mobile or portable deployments

Why It Fits These Environments

• 4G LTE connectivity removes the need for cables

• WAN failover ensures uninterrupted Internet

• External antennas improve signal strength

• WPA3 + industrial‑grade certifications enhance security

• Simple SIM‑based setup makes deployment effortless