Dell Latitude E6420 in Windows 10 1909

Because I had problems with my Windows 7 64 bit for Dell E6420, when it cannot run the test in 2D VWT of the MicroCFD, I upgraded to Windows 10. All devices have drivers but fingerprint and memory card reader didn't work. Also didn't work as expected. When I reset by preserving user data, VWT worked perfectly.

Fingerprint

I finally managed to get the fingerprint to work by using repeating the steps to setup fingerprint in Windows 7. I forgot how to do exactly but the resulting installed programs are as shown below.

I used Windows 7 compatibility mode as an administrator.

The order of installation in https://www.dell.com/support/article/en-my/sln297969/dell-latitude-e6420-windows-10-driver-installation-guide?lang=en#Intel_Chipset_Software_Installation_Utility,
does not seem to work.

Probably because I didn't uninstall the previously installed drivers.

Memory Card Reader

The driver for O2 Micro OZ777xxx/OZ621XX

At https://www.dell.com/support/home/my/en/mybsd1/drivers/driversdetails?driverid=74m75


The above driver appeared to be able to read but not write. This is despite it showing a mass storage missing driver. The card reader worked perfectly using Windows 7.

The driver for OZ600 recommended for E6420 didn't function despite showing no error in the device manager.

https://www.tenforums.com/drivers-hardware/104113-working-o2micro-card-reader-driver-dell-latitude-e6530.html

Galane

Posts : 152 Windows 10 Thread Starter

   17 Feb 2018 #5

I manually installed the SDA Standard Compliant SD Host Controller driver and it works, up to at least a 32 gig. Microsoft's OSMicro driver *does not work properly* with the controller in a Latitude E6530, despite auto detection insisting that is the *best driver* for it.

This is my final solution despite it being limited to only 32 GB and still cannot write.

It is possible that my memory card reader is damaged. The memory card itself is good because I had tested it. The reader used to work perfectly well under Windows 7 Pro, Dell version.