Backend Side
	M.2 Slot
Host Side	Key B Slot	Key B+M Slot	Key M Slot	mPCIe Slot	Other	CFast Card Slot
SATA Port	SSDM2 M2S4C M2PS M.2 SATA-based	SSDM2 M.2 SATA-based		MS2M SSDMR SSDMC for mSATA SSD		SSDMF CFast Card
M.2 Key M					PM951-NVMe-512G PM951-NVMe-256G PM951-NVMe-128G SM951-NVMe-512G SM951-NVMe-256G SM951-NVMe-128G SM951-AHCI-512G SM951-AHCI-256G SM951-AHCI-128G M.2 PCIe SSD
M.2 Key A / E			P12S-P12F-M for M.2 PCIe SSD
mPCIe	M2MS1 for M.2 SATA-based	M2MS1 for M.2 SATA-based
PCI-E 4X			M2P4A M2P4B M2P4S M.2 PCIe SSD
PCI-E 1X				PP1061 mSATA SSD
USB 3.1				U31MR mSATA SSD
USB 3.0	U3M2B M.2 SATA-based	U3M2B M.2 SATA-based	U3M2M M.2 AHCI PCIe SSD	SSDMB V1.5 mSATA SSD
USB 2.0					UAK1-C01 USB Data Encryption Lock