The 802.11n wireless mode is disabled on ThinkPad X1 Carbon (Type 34xx) and ThinkPad Helix (Type 3xxx) with Microsoft Windows 8, therefore, the wireless card will not connect to 802.11n access points in 11n mode. Connecting to an access point that does not support 11n is not affected.
The above symptom is associated with, but not limited to, the following systems:
Users are able to configure and use Wi-Fi. However, the performance will be limited to 11a or 11g mode depending on the access point setting.
The user should enable the 802.11n wireless mode from Device Manager as shown below.
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