Description
The ASUS DSL-AC51 (SKU: DSL-AC51) is a dual-band VDSL/ADSL modem router designed for home and small office connectivity. It integrates DSL modem and wireless router functionality in a single device, making it suitable for DSL broadband and Ethernet WAN deployments.
This device supports WiFi 5 (802.11ac) with combined speeds up to 733 Mbps. It delivers up to 433 Mbps on the 5GHz band and 300 Mbps on the 2.4GHz band. As a result, it provides stable performance for browsing, streaming, and basic multi-device usage.
The router supports VDSL2, ADSL2/2+, and ADSL standards. In addition, it includes an Ethernet WAN port. Therefore, it can operate as both a DSL modem router and a standalone wireless router. It also supports dual WAN functionality with failover or load balancing.
The DSL-AC51 uses ASUS AiRadar beamforming technology. As a result, it improves signal coverage, connection stability, and wireless performance across connected devices.
For networking, the device includes Ethernet LAN ports and a DSL (RJ-11) port. It supports IPv6, QoS, guest networks, and firewall features. In addition, it provides VPN server and client support for secure remote access.
The router runs ASUSWRT firmware. It enables centralized management, traffic monitoring, and easy configuration through a web interface or mobile app. Therefore, it simplifies deployment and ongoing network control.
The DSL-AC51 fits residential and SMB environments that require DSL connectivity with basic AC wireless performance. It works well for general internet access, remote access, and entry-level multi-device networks.
Key Features:
- AC750 dual-band WiFi (433 Mbps 5GHz + 300 Mbps 2.4GHz)
- Supports VDSL2, ADSL2/2+, and ADSL broadband connections
- Dual WAN support (DSL + Ethernet WAN) with failover/load balancing
- AiRadar beamforming for improved coverage and stability
- VPN server/client support with IPv6 and QoS features
- ASUSWRT management with mobile app control
