M.2 - Wikipedia
Another M.2 slot is located at the bottom of the motherboard, and both M.2 slots offer 32Gb/s of bandwidth as well as support for SATA6Gb/s based M.2 drives.
MSI B550M PRO-VDH WiFi ProSeries Motherboard (AMD AM4, DDR4, PCIe ...
It was only a matter of time before another motherboard manufacturer integrated M.2 SSDs into their motherboard and ASRock did so with their release of the AMD Fatal1ty 990FX Killer motherboard.
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HUANANZHI deluxe X79 motherboard with M.2 NVMe slot CPU Xeon E5 2690 C2 with cooler RAM 16G(2*8G) RECC GTX1050Ti 4G video card.
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Notably, the VRM design is shared with Gigabyte’s entry-level boards, there is only one M.2 slot and the motherboard lacks USB 3.2 Gen2 support.