Lenovo ThinkPad Twist S230u - Manual (Page 3)

Due to the channel restrictions above, the operation of this product using the
fat channel mode (40 MHz of channel bandwidth) is not allowed at the 2.4 GHz
frequency band.
Notice for users in Nigeria
For models: BCM943228HMB and 2230BNHMW
Notice for users in Pakistan
The following adapters have been approved by Pakistan Telecommunication
Authority (PTA):
• BCM943228HMB
• 2230BNHMW
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