I am not sure, but I think it is related to a secondary SATA controller connected to the PCIe bus. On my system, I have a Marvell Controller that seems to show the same type of details, although mine has different numbers.
If you have such a device, you might try disconnecting whatever is connected to it for testing, or perhaps looking for a newer driver for it.
You could probably go into Device Manager and check the properties-Details tab-
children listing to see if it is the correct device. Mine shows the following.
PCIIDE\IDEChannel\5&1565936&0&0