Thanks to the many lanes that the chipsets offer for extra functionality, we find quite a few M.2-slots on these boards. In the table below you can find the total amount of M.2-slots, with next to that the amount that actually has four PCIe 3.0-lanes worth of bandwidth. After all we still see slots that only support for example SATA-based M.2-SSDs.
On every board the six SATA600-connectors offered by the chipset are utilized, without extra additions. Two Gigabyte boards even offer SATA-Express, but that standard truly went out quietly.
|ASRock Fatal1ty H270 Performance||6||-||2 (2)|
|ASUS Strix B250F Gaming||6||-||2 (1)|
|ASUS Strix B250G Gaming||6||-||2 (2)|
|ASUS Strix B250H Gaming||6||-||2 (2)|
|ASUS Strix H270F Gaming||6||-||2 (2)|
|Gigabyte B250-HD3P||6||1||1 (1)|
|Gigabyte B250M-DS3H||6||-||1 (1)|
|Gigabyte H270 Gaming 3||6||2||2 (2)|
|MSI B250M Mortar||6||-||1 (1)|
|MSI H270 Gaming M3||6||-||2 (2)|