Cradlepoint MC20-ETH Dual Fast Ethernet Expansion Module with 2x RJ45 for S400 and S450

The Cradlepoint MC20-ETH Dual Fast Ethernet Expansion Module gives Cradlepoint S400 and S450 routers two extra 10/100 RJ45 Ethernet ports. It is part of Cradlepoint's expansion module accessory family, designed to let the router's physical interfaces be adapted to the equipment at each site rather than adding external hardware.

Many S400 and S450 deployments connect a small number of wired endpoints: a kiosk and its payment terminal, a digital sign and its media player, or a controller alongside a local display. When those endpoints outgrow the router's built-in ports, the MC20-ETH adds two more Fast Ethernet connections inside the same enclosure. That keeps the installation compact, avoids a separate unmanaged switch and its power supply, and keeps the connected devices behind the Cradlepoint router.

Fast Ethernet (10/100) is well suited to the typical IoT and branch endpoint, where link reliability matters more than gigabit throughput. The package contains the expansion module, and the Cradlepoint S400 quick start guide covers the router platform it installs into.

This MC20-ETH part is listed by the manufacturer for the North America region and is an active Cradlepoint product. For IT and operations teams standardizing on S400 or S450 routers across many sites, it offers a consistent way to add wired capacity where a location needs it.