The PCI Simple Communications Controller with hardware ID PCI\VEN_8086&DEV_A2BA&SUBSYS_1C3A1458&REV_00 can be found on https://www.gigabyte.com/Motherboard/Z370M-D3H-rev-10#support-dl which is the website for the Gigabyte Z370M D3H-CF motherboard. The driver for the PCI Simple Communications Controller with hardware ID PCI\VEN_8086&DEV_A2BA&SUBSYS_1C3A1458&REV_00 is actually the chipset driver available on the website.