These recommended settings can be found under the Advanced menu on Intel® PROSet/Wireless Software.
802.11n channel width for band 2.4: 20 MHz.
802.11n channel width for band 5.2: Auto (not in 20 MHz only)
Fat channel intolerant: Disabled
Roaming aggressiveness: Medium or less.
Throughput enhancement: Disabled
Transmit power: Highest
Wireless mode: 802.11b/g