The EH-6 cord does what it was designed to do. That is, it supplies power to my Nikon D2x camera when the battery has been removed. This is very useful when reviewing lots of photos or using a feature like image overlay. It will cut down on battery recharges. However, what I don't understand is why Nikon charges so much for an AC cord ([$] at Adorama). I like Nikon products but feel that once you buy a camera, Nikon charges excessively high prices for some of the accessories you need to build a comprehensive system around the camera. Once again, I'm very disappointed with Nikon's pricing schemes and feel they should treat their high-end customers better!