Does anyone know, where i can fing the power adapter for the
R7800 — Nighthawk X4S AC2600
Netgear does not sell replacement power adapters. Any generic transformer will work, as long as it has the right volts, enough amps and a tip with the right (+/-) polarity and dimensions. (Look at the label on your device or the old adapter.)
Some generic adapters come with a set of tips that will fit a range of different devices.
These things are pretty common, so first check to see if you have something compatible lying around. But as @FURRYe38 says, try the usual suspects. Some will even list compatibility with various Netgear devices.
