Product Features
1: Adapter will fit the Asus UX31/UX21 Zenbook, and allows you to replace the original drive with a standard M.2/NGFF SSD.
2: Can be used to replace the following drives:
Sandisk U100 Series &compatible Storage
SDSA5JK-256G
SDSA5JK-128G
SDSA5JK-064G

3. ADATA XM11 Series & compatible Storage
ADATA XM11-256GB
ADATA XM11-128GB

3: Supports 4 sizes of M.2/NGFF SSD: 2230,2242,2260,2280
4: Plug and Play. No drivers are needed. With this adapter, BIOS will automatically recognize standard M.2 SSD drives.
5: Supports DOS, Win98/SE, 2000, Server 2003, XP, Vista, 7, Sever 2008 & Mac OS & Linux.
6: Adaptor is the same size as the SSD from Asus UX31/UX21 Zenbook: 94mm x 24mm (LxW).
7: Adaptor has 1 notch, but will perfectly support any modern 2 notch M.2 SSD ("M"-key AND "B"-Key). Any standard M.2 drive should work as long as it is one of the supported sizes (2230,2242,2260,2280). 

Package Include: 
1 X Adapter Card