D-Link DWR-M921B – 4G N300 LTE Router with 5000mAh Backup Battery, SIM Slot, LAN/WAN Port & External LTE Antennas
Overview:
• The D-Link DWR-M921B is a 4G N300 LTE Router with built-in backup battery, designed to provide mobile broadband internet connectivity anywhere 3G/4G coverage is available.
• It allows users to insert a SIM/UICC card and share 3G/4G internet connection through a secure wireless network or through the Ethernet LAN/WAN port.
• The router supports LTE downlink speeds up to 150Mbps and uplink speeds up to 50Mbps for browsing, email, streaming, and everyday internet access.
• Wireless N300 Wi-Fi provides speeds up to 300Mbps on the 2.4GHz band for connecting mobile devices, laptops, tablets, and smart devices.
• The device includes one 10/100 LAN/WAN Ethernet port for connecting wired devices or using Ethernet WAN connection.
• The 5000mAh backup battery allows the router to continue working during power failure and automatically recharges when power resumes.
• Dual active firewall protection with SPI and NAT helps protect the network from internet threats, while WEP, WPA/WPA2, and WPA-PSK/WPA2-PSK encryption help secure wireless access.
• Suitable for homes, small offices, shops, temporary sites, mobile internet backup, and locations where fixed broadband is unavailable or unstable.
Key Features:
• 4G N300 LTE Router with Battery
• 3G / 4G Mobile Broadband Connectivity
• LTE Download Speed up to 150Mbps
• LTE Upload Speed up to 50Mbps
• Wireless N300 Wi-Fi
• 2.4GHz 802.11b/g/n Wireless
• SIM Card Slot for Mobile Broadband Internet
• 1 × 10/100 LAN/WAN Ethernet Port
• 5000mAh Backup Battery
• Automatic Battery Backup During Power Failure
• Automatic Battery Recharging When Power Resumes
• 2 × 5dBi External LTE Antennas
• 2 × 3dBi Internal Wi-Fi Antennas
• WEP / WPA / WPA2 Wireless Security
• WPA-PSK / WPA2-PSK Encryption
• SPI Firewall and NAT Protection
• DoS Protection
• Port Filtering, IP Filtering and MAC Filtering
• URL Filtering
• QoS Flow Control
• IPv6 Support
• DDNS Support
• Static Route Support
• DHCP Server / Client
• Port Forwarding / Virtual Server
• TR-069 Remote Management
• Web GUI Management
• Wireless Schedule
• FOTA Support
• Ethernet WAN Link Backup via 3G/4G Module
Technical Specifications:
• Product Type: 4G N300 LTE Router with Battery
• Brand: D-Link
• Model: DWR-M921B
• Mobile Network: 3G / 4G LTE
• LTE Download Speed: Up to 150Mbps
• LTE Upload Speed: Up to 50Mbps
• Wi-Fi Standard: IEEE 802.11b/g/n
• Wi-Fi Class: N300
• Wi-Fi Frequency: 2.4GHz – 2.4835GHz
• Wi-Fi Configuration: 2T2R 2.4GHz 802.11b/g/n
• Wi-Fi Speed: Up to 300Mbps
• LAN/WAN Port: 1 × RJ45 10/100M LAN/WAN Ethernet Interface
• LTE Interface: 1 × LTE Interface
• SIM Support: SIM / UICC Card Slot
• Buttons: Reset Button, WPS Button, Power Switch
• Power Interface: Power Jack
• LTE Antennas: 2 × 5dBi External Antennas
• Wi-Fi Antennas: 2 × 3dBi Internal Antennas
• Battery: 5000mAh Backup Battery
• WCDMA Bands: B1 / B5 / B8
• FDD LTE Bands: B1 / B3 / B5 / B7 / B8 / B20 / B28
• TDD LTE Bands: B34 / B38 / B39 / B40 / B41
• Wi-Fi Channels: Korea, Japan, ETSI and FCC Channels Selectable
• Modulation Schemes: OFDM, BPSK, QPSK, 16-QAM, 64-QAM, DSSS, DBPSK, DQPSK, CCK
• Transfer Rate HT20: Up to 144Mbps
• Transfer Rate HT40: Up to 300Mbps
• Wireless Security: WEP, WPA/WPA2, WPA-PSK/WPA2-PSK
• Firewall: SPI Firewall, NAT, DoS Protection
• Filtering: Port Filtering, IP Filtering, MAC Filtering, URL Filter
• Network Features: DHCP Server / Client, NAT, NAPT, ALG, Port Forwarding, DDNS, IPv6, Static Route
• WAN Backup: ETH WAN Link Backup via 3G/4G Module
• Management: Web GUI, TR-069 Remote Management, Logs and Statistics, FOTA
• Additional Features: QoS Flow Control, Wireless Schedule, SNTP Date/Time Update
• Network Protocols: UDP, IP, ICMP, TCP, Ethernet ARP, IP over Ethernet, PPPoE, PPP in HDLC-like Framing, PPP IPCP, IPoE
• Power Supply: 12V / 1A
• Operating Temperature: 0°C to 40°C
• Storage Temperature: -20°C to 70°C
• Operating Humidity: 5% to 95% Typical
• Regulation Compliance: CE
• Safety Regulations: UL
• Green Standard: RoHS
Applications:
• 4G internet sharing
• Home internet backup
• Small office internet backup
• Shops and retail internet connection
• Temporary sites and project offices
• Locations without fixed broadband
• Mobile broadband deployment
• Emergency backup internet during power failure
• Wi-Fi sharing from SIM card
• Wired internet connection through LAN/WAN port
• CCTV/NVR internet backup connection
• Remote branches and portable internet usage
Connect Gates Recommendation:
• Recommended for customers who need a practical 4G LTE router with Wi-Fi, Ethernet LAN/WAN connectivity, and battery backup for unstable power environments.
• Suitable for homes, shops, small offices, temporary locations, CCTV backup connectivity, and areas where fixed internet is unavailable or unreliable.
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