Unfortunately, I cannot offer support on networking issues. If one device connects just fine, and the other does not, there might be any number of variables in play with these networks situations.
There by two recommendations I can make. One will be to check out the C|Net networking forum.
The other would be to call your router's manufacturer, in this case Apple, and see if they can assist you with adjusting settings and connecting other devices.
Unable to connect wirelessly to my Airport router. Blu-Ray BD5700 made a wireless connection no problem. Blu-Ray player is turned off when configuring. TV made a perfect connection with ethernet cable from router. What's going on here?
My network is visible when configuring with a strong signal. I have WPA security and have typed in password, but no connection.