After installing the Axagon SATA controller, my PC has a slow start to Windows. Can something be done about it?

A): The lead time is naturally longer by the time it takes to detect the controller and connected disks. The start time can be shortened in the MB BIOS by enabling the "Quick Boot" feature. For newer boards, this feature is labeled "Fast boot". The lead time depends, of course, also on the disk used for the SSD/HDD operating system and the number of peripherals connected to the computer.

B): In the case of newer motherboards, it is more practical to use the spin down (instead of turn off) feature.