M.2 and Sata
M.2 and Sata
The top M.2 module comes from the CPU, while the bottom one is part of the chipset and connects to SATA5 and SATA6 ports. Using two M.2 slots allows you to keep utilizing SATA1 through SATA4 ports.
Sure, the details about PCPP aren't fully covered. It's convenient to use m.2 slots without filling up all SATA connections, since that would leave them unused. You still have four SATA ports available, allowing for either six SSDs or two SSDs plus four optical drives.