> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/manifold-5l-and-manifold-5s-ethernet-switch/manifold-5l-subsea-ethernet-hub.md). # Manifold 5L Subsea Ethernet Hub The Cerulean Sonar Manifold 5L Switch and Cerulean Sonar Manifold 5S Smart Switch constitute a family of subsea five-port 300-meter pressure-rated Power-over-Ethernet (POE) switches designed for use on Remotely-Operated Vehicles (ROV), Autonomous Underwater Vehicles (AUV), and tethered underwater instrumentation packages. The Manifold 5L is a basic 5-port 10/100 Ethernet switch with Power-Over-Ethernet support. The Manifold 5S is a 5-port Ethernet switch with one ethernet port used for a Brain that enables smart ports for serial, USB, and I2C devices. {% hint style="warning" %} The Manifold 5S is not available for individual sale at this time. {% endhint %} Either variant can optionally have a tether interface installed. When installed, the tether interface consumes one Ethernet port.