Macbook Early 2007 with 10.6.8 cant connect to 5Ghz WiFi

Question

Hello there,
I have macbook early 2007 and already installed 10.6.8, today i found out that my macbook cannot connect to 5Ghz WiFi network, when i check the system profiler it shows that my aircard only support channel 1-13 which is 2.4ghz only, aircard region is APAC and Country Code: ID. is there any possibility to set my aircard to use the 802.11a since it is supported (aircard shows 802.11a/b/g/n)
My AP is Ubiquiti Rocket M5 which supports only 802.11a/n.
Interfaces:
en1:
  Card Type:          AirPort Extreme
  Firmware Version:          Atheros 5416: 2.1.14.6
  Locale:          APAC
  Country Code:          ID
  Supported PHY Modes:          802.11 a/b/g/n
  Supported Channels:          1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  Status:          Connected
Thankyou

Answer 1

Whilst it may not be your fault I am afraid it appears that your post is on a forum which is not the best for your OS. It will save the time of the unpaid volunteers here, and may resolve your issue faster, if you could examine the list below and see if there is a more appropriate forum to which you could direct your question.
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