and Two SSDs can be inserted at the same time, only one SSD can be recognized at a time, and the switch needs to be toggled to the corresponding position NGFF part of this adapter card is only suitable for B-key or B/M-key interface, not for M-key interface. Use of hard drives that do not support AHCI and NVME protocols Switch toggle design, the NGFF mode switch is toggled up, the MSATA mode switch is toggled down Size:10x7cm Only m2 hard drives that support protocol (NGFF) are used: 1. Convert the SSD solid state drive that supports M.2 NGFF or MSATA to SATA2.5 inch /3.5 inch hard drive for use 2. Fully compatible with SATA3.1 standard 3. Compatible with PCI Express M.2 protocol 4. NGFF and MSATA SSD allow input voltage of 3.3V and maximum current of 3A. This adapter card has no chip, so there is no such thing as a speed. It only serves as a fer function. The speed is related to the SSD itself. 5. Support M.2 NGFF SSD of 80mm 60mm 42mm 30mm 6. Support full-height and half-height size MSATA SSD Colour:black Material:plastic Package Contents: 1 * Hard Disk Adapter Board 1 * screwdriver Only the above package content, other products are not included. Note: Light reflection 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.