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Lenovo t420s and t520 wireless cards - are they compatible?

Posted on 2016-08-24
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Last Modified: 2016-09-12
I want to swap them out

I dont have the t420s in front of me, Ive to go onsite and wondering if I can swap my own card with the customers ...
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Question by:feck1
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Scobber earned 167 total points (awarded by participants)
ID: 41768583
Because they are similar models perhaps.

the T420s has whats called a BIOS whitelist, this means that unless the VEN and DEV strings are burnt in the bios the card will not work

If the cards are both the same model intel wireless then the VEN and DEV id would match and therefore it would work

Take a look at the Lenovo website, if there is a wireless driver for the model card you have. Then it will potentially work.

Cheers
Scott
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by:John Hurst
John Hurst earned 166 total points (awarded by participants)
ID: 41768764
You can try. If the card does not work, you would have to edit the BIOS and that is not something I recommend.

Why do you need to change?  The cards should be similar in terms of performance.
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by:Obaid ur Rehman
ID: 41769259
T450 has Wireless adapter from Inter whereas T420 has Sierra according to Lenovo Support Website:

If you want to swap the wireless cards, you would need to install the correct driver.

Intel Wireless Adapter in T450 is compatible up to WIndows 10 64 bit, whereas Sierra is compatible up to Windows 7 64 bit according to Lenovo Support.

So if you are going to swap the Wireless adapters, you'd need to deal with the driver and also depends on the operating system.

Check below:

http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-T-Series-laptops/ThinkPad-T420?tabName=Downloads&linkTrack=Mast:SubNav:Support:Drivers and Software|Drivers and Software&beta=false

http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-T-Series-laptops/ThinkPad-T450?tabName=Downloads&linkTrack=Mast:SubNav:Support:Drivers and Software|Drivers and Software&beta=false
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Expert Comment

by:John Hurst
ID: 41769278
Sierra is a cellular card, not the Wi-Fi card. That would be a different card.
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by:Obaid ur Rehman
Obaid ur Rehman earned 167 total points (awarded by participants)
ID: 41769340
@John, thank you for pointing it out.

My comment above needs to be updated as:

1- Make sure the Wireless cards use similar drivers (rare)
2- Both have Intel Wireless LAN
3- T420 Wireless LAN compatible up to Windows 7 (64 bit) and T450 up to Windows 10 (64 bit)
4- You might have to deal with the driver according to the operating system.
5- You might be able to find a driver for T420's Wireless adapter from Intel (not really sure but possible)

To find out compatibility, visit the support websites above.
Most likely, you will have to deal with the driver after swapping.
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