Using this adapter card, you can use the B key ngff m.2 of the SATA protocol SSD to replace ASUS UX21A UX31A UX21E UX31E notebook original ssd. the ASUS UX21A UX31A UX21E UX31E notebook board has 4 fixed holes, 22 30 mm, 22 42 mm 22 60 mm 22 80 mm SSD.
