Features: The adapter card only supports B+M KEY SSDs hard drive specifications of 2280 with M.2 NGFFs SATAs protocol.<br> Not supported: SSDs hard drive with M.2 NVME PCIE protocol.<br> for UX21A UX31A UX21E UX31E machine models only compatible!<br> M.2 interfaces several protocols for hard drive, but this product only supports SATAs protocol with a specification of 2280!<br> This product supports interchangeables hard drive models: XM11-128G, XM11-256G, SDSA5JK-064G, SDSA5JK-128G, SDSA5JK-256G, SD5SE2-128G, and SD5SE2-256G<br> Specifications: Materials: ABS<br> Size:94x24x4mm/3.62x0.94x0.157inch<br> Package Includes: 1Set Adapter Card<br> note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid.<br> Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store