Garmin RJ45 Marine Network Cable PoE Isolation CouplerSafely connect FLIR M or MD Series cameras to Garmin GPSMAP MFDs with a marine grade PoE isolation coupler. This Garmin accessory protects your equipment while delivering reliable Power over Ethernet for video and data on the water. PoE isolation and protection: Isolates the PoE path to help prevent short circuits or power surges that could damage your Garmin unit or PoE device, while ensuring proper data and power delivery between camera and MFD.