• Stable Wi-Fi Range – Fast, stable Wi-Fi throughout your office with 4×4 MIMO antenna design and ASUS AiRadar beamforming.
• Hardware Dual-WAN – Dual physical WAN ports for ultimate speed and reliability, with up to 2Gbps aggregated bandwidth and failover capability.
• M.2 Slot for Faster Storage – Internal M.2 SATA slot for ultra-fast networked SSD storage.
• Easy Management – Grow your business with Captive Portal to set up customer Wi-Fi within steps ; and manage your network with convenient Device Grouping and RADIUS server.
• Improved Network Safety – Protect sensitive company information with AiProtection, VLAN, and hardware crypto engine IPsec VPN, all without sacrificing working efficiency.
• Teaming Support – Up to 4Gbps LAN connections.
• Up to 250 Simultaneous Client Connections – MU-MIMO design and robust connectivity for the most demanding environments.

3 years warranty
https://www.asus.com/hk/Business-Networking/BRT-AC828/