Maintain WAN continuity in high-availability UniFi environments with the USW-WAN. This managed Layer 2 switch is purpose-built to connect two Shadow Mode High Availability UniFi Gateways to a single ISP, using 10G SFP+ connectivity for both the uplink and downlink path. A dedicated 1 GbE management port keeps administration separate from the WAN data path. The design is focused on resilience. Dual AC inputs support power redundancy, which matters when the switch sits in front of critical internet-dependent workloads. With 4 total ports and 10 GbE Ethernet technology, the USW-WAN is not a general-purpose access switch; it is a specialized component for failover architectures where uptime is measured in business continuity. For teams standardizing on UniFi and building Shadow Mode HA deployments, this switch provides the right physical topology for ISP failover and gateway redundancy. It is the kind of infrastructure piece that earns its place by reducing single points of failure at the edge.