Easy to install provided one watches the youtube video, and works as expected as replacement for the original Samsung SSD 128GbHighly recommended.

Very easy installation, booklet pretty useless but good videos out there on youtube

the instructions were not good but the video on amazon was helpful, took me 5 minutes to install the drive, the case for me was useless as my original drive won't work, booted my mac to via Wifi, on boot up used the disk utility to format the drive, used the time machine backup from time capsule to restore, few hours later everything came back to where it was last week with 120 GB more capacity

Watched the videos on YouTube and everything worked smoothly.

YouTube videos available to help with install

Just like the video!

Installation is tricky, especially if, like myself, one has never opened up a Mac Air before, but there are some very helpful videos on YouTube