I have a Dell 5530 that reads SDCards very slow. 

First, I have a Dell 3550 Vostro.  I used the 64GB, class 10 card in this computer and transferred 500M in a couple seconds to the SDCard.  No problem.

I use the same card in the Dell 5530 and it hesitates as it tries to copy the files to the SDCard.

Both computers have their drivers updated to the latest on the Dell site.  Both computers read the SDCard at the same fast speed.  USB thumb drives are fast.  USB Hard drives are fast.

What's the big deal with the writing on the 5530?!?

As fyi, I did put the SDCard in a transcend USB3 reader and the results were the same on the 5530 with slow write speeds.

It's almost as if the computer is choosing to write horribly on a SDCard and fast on everything else.

Also, reading from the SDCard, thumb drive, and hard drives are fast on both computers.

Anyone have ideas on what the heck is going on with the 5530 when writing to an SDCard?!?