The only drawback of ASUS is that the WPS function of the device in Access Point mode is not active. The otherwise existing entry in the router's menu in Access Point mode no longer present, the WPS button on the device with no function. Technically not understand why the function precisely in this pure-Fi mode can not be activated. Anyone who plans to use the router in Access Point mode and will connect many devices with WPS, should resort to another device.
Update 03/05/2014:
With the latest update, the WPS function in the operation has now been recognized as an Access Point. Moreover, since the NAS operation works very well with a WD Elements 3TB hard drive, there is the highest rating.