05-05-2012 07:55 PM - edited 05-05-2012 08:21 PM
I just recently purchased a customized T420s with an Expresscard SD card reader. However it can not be discovered in Win 7 Pro. I pluged the same Expresscard slot SD card reader into my the other notebook, and it is working. I tried to re-install the operation system from the default recovery drive. The BIOS setting is untoughed. (Verion 1.31). Still it is not working(no tone when pluging or unpluging).
So this Expresscard slot on my T420s is not working at all. Is there any driver I need to install?
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05-05-2012 08:41 PM - edited 05-05-2012 09:29 PM
you mean the 4 in 1 card reader doesn't work?
does it get detected under the hardware property?
It should be automatically detected when you plug and unplug it, well at least this is the case when i tested the T420s of mine friends' when i was showing them how use an eGPU solution.
05-05-2012 09:07 PM
Yes, the 4 in 1 card reader can not be detacted by Win 7 at all. It is working with my the other pc.
I will need this ExpressCard slot working for eGPU solution as well...
05-08-2012 02:26 AM
I'm not sure if this helps but it is worth checking out.
In that site there are a list of newest drivers for the card reader. you mmght want to take look and see in loading the drivers might help in any way.
Do let me know how it goes,
10-07-2016 08:57 AM
I followed this thread through and some wise person below mentioned going into the BIOS and turning off PCI power management. This worked like a charm for me for ALL of my expressCard devices! Please try to change the BIOS setting first - I think this solves a lot of issues.