A: Absolutely. The 2021 manual shows SATA port 0 (the one closest to the 24-pin power connector) supports AHCI mode. Enable AHCI in BIOS under Integrated Peripherals > SATA Mode.
A: Look for a 3-pin header labeled JBAT1 near the CMOS battery (CR2032). The 2021 manual includes a high-resolution PCB diagram on page 31. ms7869 ver 10 motherboard manual 2021
Published: January 2021 (Updated for legacy support) A: Absolutely