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    T440P Wifi Help (No 5GHz)

    Discussion in 'Lenovo' started by 691175002, Oct 28, 2014.

  1. 691175002

    691175002 Notebook Enthusiast

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    Hi, I'm trying to get wireless n working on my t440p.

    I have the default "Thinkpad bgn" network adapter, which claims to support the n standard. I cannot see any 5Ghz networks when connecting the usual way.

    [​IMG]

    [​IMG]

    I just updated to the newest drivers, listed here on the lenovo site:
    http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/gjwx04ww.txt

    Windows 8.1 64bit.

    I really need this working since the 2.4GHz band in my apartment is so saturated it is essentially unusable. I was just going to buy an Intel wifi card but apparently Lenovo locks down the bios to prevent that?
     
    691175002, Oct 28, 2014
    #1
  2. ajkula66

    ajkula66 Courage and Consequence

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    I'm going to venture a guess that the 5Ghz band is not supported at all, and that the "N" aspect of the card works only in 2.4 range.

    As for the locked BIOS: the machine is recent enough that it should support *lenovo-issued* Intel cards even up to 7260AC, but they *must* have a proper FRU number on them, otherwise a modded BIOS will be required for a generic card to operate.

    Good luck.
     
    ajkula66, Oct 28, 2014
    #2
    Dragnoak likes this.
  3. Dragnoak

    Dragnoak Notebook Evangelist

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    Dragnoak, Oct 28, 2014
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    Prostar Computer likes this.
  4. Jakoob

    Jakoob Notebook Enthusiast

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    I hope this is just driver issue. I can't believe Lenovo would sell ThinkPad in 2014 without 5G support. If so, then back on trees gentlemen.
     
    Jakoob, Oct 30, 2014
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  5. Prostar Computer

    Prostar Computer Company Representative

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    It's not a driver issue, and it's not a fly by night scheme of Lenovo's. A lot of current WLAN cards rely exclusively on the 2.4 GHz frequency. As Dragnoak mentioned, B/G/N standards don't tout 5 GHz support, only A and AC protocols do.
     
    Prostar Computer, Oct 31, 2014
    #5
  6. livebriand

    livebriand Notebook Consultant

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    Yep. How do I put this...
    b/g is 2.4GHz only
    a/ac is 5GHz only
    And 5GHz can always do 2.4GHz, sometimes 5GHz


    I never thought of 5GHz as being important until I moved into a dorm at uni. 2.4GHz works here, but is much slower than what I got at home. 5GHz works fine though.
     
    livebriand, Oct 31, 2014
    #6