Power connections ContentsPower over Ethernet (PoE)Power over Ethernet (PoE) is a system which allows both power and data to be passed along a single CAT 6 Ethernet cable.Power connectionThe power for the network switch is provided directly by a 12 V or 24 V dc power source.Ensure sufficient nominal voltageInline fuse and thermal breaker ratingsThe following inline fuse and thermal breaker ratings apply to your product:Power distributionRecommendations and best practice for the power connection of products supplied with a drain wire as part of the supplied power cable.Power cable extension (12 / 24 V systems)If you need to extend the length of the power cable supplied with your product, ensure you observe the following advice:Power cable drain wire connectionThe power cable supplied with this product includes a dedicated drain wire for connection to a vessel's Radio Frequency (RF) ground point (if available), or the negative battery terminal.Previous topic: Network connectionsNext topic: Troubleshooting