# Tether Interface Option

The Manifold series supports an RAK tether interface compatible with the Fathom-X tether drivers used on Blue Robotics BlueROVs. This allows the tether to connect though the Manifold instead of into the ROV's main electronics enclosure. If used in this way, the switch consumes net zero penetrator holes in the ROV's main electronics enclosure. If the BAR30 is also moved to the switch (Manifold 5S only), an additional ROV penetrator opening is made available. The Fathom-X board in the main enclosure can be eliminated, and any Ethernet switch in the ROV main electronics enclosure can also usually be eliminated.

The RAK interface includes optional power demultiplexing, so the Manifold can optionally be powered though the tether (power over tether, or "POT"). This feature is intended for when the switch is used in a stand-alone application, it is not intended to power the switch when the switch is attached to an ROV.

Powering the switch by tether requires a tether power injector at the head end of the tether.

{% hint style="info" %}
Please read the section describing [power over tether considerations](/c/manifold-5l-and-manifold-5s-ethernet-switch/power-over-tether-considerations.md) for important information about power consumption by the tether.
{% endhint %}


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