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Paper Tape
Posts: 2
Location: Germany
Message 1 of 3

Replacing the Realtek wifi card with an Intel one

Hey everyone,


I am trying to replace the poor performing realtek wifi module with an Intel Centrino one on my T420.


I purchased an "Intel Centrino Advanced-N 6205"  which is one of the chips the T420 comes with.

Apparently my chip is not whitelisted, as I could not boot with it plugged in.


Lenovo support was unable to tell me where to get a Lenovo branded chip.


Can anyone help me out?


Thanks in advance!

Community Moderator
Community Moderator
Posts: 6,070
Location: US
Message 2 of 3

Re: Replacing the Realtek wifi card with an Intel one

Hello and welcome,


As you've discovered, wifi cards have to be the correct model (Intel xyz) and have a Lenovo FRU number.


I can't link to the T420 Hardware Maintenance Manual at the moment - support is undergoing maintenance Smiley Sad


Here are the Intel models and FRUs from my local T420 HMM:


Wireless-N 1000                       60Y3241

Advanced-N 6205 (2x2 AGN)             60Y3253

Ultimate-N 6300                       60Y3233

Advanced-N + WiMAX 6250, WW SKU       60Y3195

Advanced-N + WiMAX 6250, Russia SKU   60Y3209


Hopefully that helps your search.





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Paper Tape
Posts: 2
Location: Germany
Message 3 of 3

Re: Replacing the Realtek wifi card with an Intel one



thanks for the quick response!

Googeling for the FRUs did yield some promising results.

I just ordered one and hope that it works with my laptop!

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