M key M.2 NGFF SSD to PCI-E X4 adapter or B key M.2 NGFF SSD to SATA adapter. The speed and other properties is not changed, only change the interface type and without any software or drivers. Support size: 22x30 mm, 22x42 mm, 22x60 mm, 22x80 mm M.2 NGFF SSD. Macth with two kinds of Metal sheet ( length: 8 cm, 12 cm ) Compatible with any ( On the premise of must be compatible with your hard disk ). Product name: M.2 NVME to PCI-E 3.0 X4 Expansion Card Type: PCIE to M2 Adapter Internal Interface: M Key + B Key Dual Ports Support Slots: PCI-E 3.0 X4 GEN3 (Compatible with X4 X8 X16 slot) Support devices: PCI-E specification m.2 NVMe and SATA specification M.2 NGFF disk Support system: XP/Vista/7/8/10, Linux, OS. About M.2 NGFF SSD interface standard: Socket 2(B key 2 ):there are SATA(such as THNSNH128G8NT/ THNSNH128GDNT/MZNTD256HAGM models of SSD) and PCI-E 2X(such as -AG128M6E/-AG256M6E/-AG512M6E/SD6PP4M models of SSD) two different transfer mode. Socket 3(M key,4 ):PCI-E 4X(such as MZHPU128HCGM MZHPU256HCGL and MZHPU512HCGL models of SSD) transfer mode. Colour:As shown Material:PC+metal Package Contents: 1 x m.2 adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.