Intel C600 Series Chipset SAS RAID Controller for Dell T7600 workstation

I have a Dell T7600 workstation now on Windows 10 with the OS on a HDD connected to a SATA port. Originally the system had three HDDs all connected to SAS ports in drive bays. One of these is now the SATA OS disk but the other two won’t work on the SAS ports.

I made a mistake in uninstalling and removing software for the Intel C600 Series Chipset SAS RAID Controller.

In Device Manager now, the only mention of SAS is a "SAS Controller" without a driver which couldn't be found locally or online. When DELL SupportAssist analyzes my system it says “No driver updates found. Your system has the most recent updates”

I’d like to know what to install to allow my disks to work on the original SAS ports.

Perhaps drivers on this page will work? When I come to run the first file I get the following screen so I want to be sure these are right before going ahead:

Grateful for any help - thank you!