If all other devices are able to connect to the wireless network, usually nothing is wrong with the router itself. However, there a few things you can try:
* Note: When using WPA-PSK instead of WPA2-AES, the wireless transfer speed on your computer may become slower. WPA-PSK is not as fast as WPA2-AES.
If you are still not able to connect your iOS 5 (while all other network devices can connect) you can contact Apple for further support. You can also visit the Apple forum for more support from other users: Click
Preferably, the cable needs to be as short as possible for maximum signal. Therefore, the cable which is supplied with the Eminent router needs to be used.
However, if you want to use a longer cable, make sure you are using a CAT5 or CAT6 cable. The maximum length is 3 meters.