(Redirected) Dell Lattitude E6230 - powered eSATA port and Drive not recognised in Windows 10 x64

I have three Dell Lattitudes with powered eSata ports. I purchased a sata/power cable to SATA interface hoping to use a SSD or 2.5" hard drive.

However although there is power going to the drive, it is not recognised on boot nor in Windows 10 x64.

There are no drivers missing in Device Manager. The SSD/HDD are all recognised and working using USB to SATA adapters.

Can any one help please? 

Is there a missing Driver?

There is nothing in the BIOS I can see that I can turn on ... everything is enabled.

Thanks