The NGFF Key B+M slot is 6mm height and can't fit in laptop M-key slot.
^^ PCBA dimension: 22*110mm, Main
control chipset: JMB582 ^^ Supoort SATA NGFF Key B+M SSD with 2230/2242/2260/2280.
^^ Applicable slot: NGFF Key B+M SSD to M-Key Host. ^^ It has NGFF Key B+M interfaces, which can be connected to an SSD, and supports desktop motherboard PCI-E NVME M-key port.