Half SD4.0 is developed and produced based on the standard of UHS-II. It has amazing writing speed which fulfills the requirements of 4K, 8K and 3D video recording.  What’s more, the package size of Half SD4.0 is more delicate than before in order to effectively enlarge capacity for electronic devices such as Surface Book.


  • Microsoft Surface Book






  • Water-proof, high/low temperature resistant, X-ray resistant, and antimagnetic
  • Reading Speed: 260MB/s; Writing Speed: 230MB/s
  • UHS Speed Class 3 can support 4K, 8K and 3D video recording for cameras that are accessible to UHS-II interface with its outstanding performance. Half SD4.0 is a perfect product for Microsoft Surface Book to enlarge capacity


Part NumberDensityActual SizeReading Speed
Writing Speed
NCSYKXX-016G16GB14.7GB260 MB/s230 MB/s
NCSYKXX-032G32GB29.4GB260 MB/s230 MB/s
NCSYJXX-064G64GB58.9GB260 MB/s170 MB/s
NCSYKXX-064G64GB58.9GB260 MB/s230 MB/s
NCSYJXX-128G128GB118GB260 MB/s170 MB/s

OEM/ODM Service

The design of retail package and brand LOGO can be customized.

Technical Support

Look up to drivers and manual, answer common questions or update product software.

Materials Download