Today, on an integrated z390 chipsets, a m.2 ssd sata protocol support is installed, the installation found on ssd, before mechanical hard drive is not recognized; thought mechanical hard burned;
Find related Internet blog can be found, and is the reason M.2 SATA interfaces SATA5,6 common channel; change to 2, 3 or 4, can be a channel; specific basis, as a simple record;
The figure is m.2 and stata ports available with; this figure comes from the z390 msi product manuals;
(This figure comes from the Zhongguancun online forum )
Reference links:
https://cn.msi.com/Motherboard/MAG-Z390-TOMAHAWK/Specification msi z390 TOMAHAWK;
https://cn.msi.com/Motherboard/support/MAG-Z390-TOMAHAWK#down-manual z 390 Product Manual Download;
https://www.intel.com/content/www/us/en/products/chipsets/desktop-chipsets/z390.html z 390 chipset specification; (supports Intel Optane Memory)