The Cradlepoint TAA-170700-000 COR Extensibility Dock extends what Cradlepoint's compact routers can do. The IBR900/IBR950 and IBR600C/IBR650C series, along with the R500-PLTE, are deliberately small devices; the Extensibility Dock gives them room to grow. Docked, a compact router gains access to Cradlepoint's modular expansion ecosystem—most importantly the MC400 modular modem family, which adds a second cellular radio for dual-modem, dual-carrier configurations. That capability changes the economics of redundancy for small sites and vehicles. Instead of replacing an IBR900 with a larger dual-modem platform, an organization docks the router it already owns and adds the modem it needs. Coverage-critical deployments—public safety, kiosks in weak-signal locations, failover for small branches—get carrier diversity at accessory cost. The dock also pairs with COR extensibility cables, such as the SATA-to-DB9 TAA-170767-000, for serial-style integrations. As a managed part of the router, the docked configuration is administered through NetCloud with no separate management surface. The dock ships at a listed ten pounds and mounts alongside the router in vehicle and cabinet installations; a companion magnetic mount kit (TAA-170718-000) covers temporary and mobile placements. The TAA part number satisfies Trade Agreements Act procurement requirements, keeping the dock available to federal and municipal projects. If your compact Cradlepoint fleet needs a second modem or expanded I/O, the dock is the platform piece that makes it possible.