What happens there?

The optics and processing is OK. The fit also. The only thing I do not like visually, is the fact that the JetDrive 130 is black and my MacBook Air silver. Thus, it falls to an extent that an external card in the Mac plugged.
But only at the margins.

The most important is the functionality. The card does what it should. save data. While not as fast as the internal SSD but at an acceptable level. So to use quite.

But now comes the hammer. With inserted Transend JetDrive 130 holds the card of my MacBook Air (Early 2014) battery, only the mid-term (4 hrs.). Why also immer.Danach is closing.

Without the card inserted the term is loosely 8 hours.
That's a No. So the card was sent back.