I have the DIR-655 router. Now I don't have the latest firmware but did just download it but I'm on a wireless computer and the wired one isn't available at the moment. I will be updating it tomorrow. So far I've read the FAQ's and stickies as far as setting everything up to get 300mbs and that's not the issue here. The problem is that it doesn't hold 300 the entire time. It will jump from 120 to 300 and everywhere in between. I'm about 2 or 3 bedrooms away so I don't believe I should be having this. Again I'm really not sure whats going on. If you can suggest some ways to fix this or speed it up that would be great. Anything to try I'll do or settings I should change just let me know. So far I have it set up in mixed mode for b, g, n; also its 20/40 auto, and set to auto for transmission rate. My wireless card is as it comes out of the box. Just installed drivers and was done.