Drop-In Mode is a feature available on certain Peplink Balance and Pepwave MAX routers. It will either be an included or add-on feature. This allows you to utilize the benefits of Peplink’s multi-WAN, load balancing and SpeedFusion routers, but continue using your existing network hardware. With 8.1 firmware it’s even easier to configure and just as before, does not require any configuration of your existing network, unless using SpeedFusion. https://5gstore.com/manufacturer/20_peplink_pepwave.html