This adapter card can convert the B+M KEY protocol M.2 NGFF interface SSD (that is, the protocol M.2 NGFF solid state drive with two gaps) into the for UX21A UX31A UX21E UX31E series notebook interface SSD. For UX31/UX21/UX51/UX21E/UX31E/TAICHI 21/TAICHI 31 SSD. The adapter card does not pass through any chip, which has no impact on the performance of the hard disk. The speed is determined by your hard disk and computer. Please update the BIOS of your machine to the latest version before changing the hard disk. It is very likely that the old version of BIOS can not recognize the type of SSD! Colour:Black Material:PCB Package Contents: 1 * M.2 (NGFF) SSD to 18 Pin SSD Adapter 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.