I'm using it in my DELL 15 7566. You have to format this and update th...e firmware in order to work properly. Before the firmware update I lost the entire data on it after every reboot. So you have to format it again under Windows 10 before use and I recommend to update the firmware. About speed: it's okay. I'm playing the latest games without any problems (Battlefield 1, NBA2k17, etc...) The writing speed now set at around 320-360 MB/sec it's 300 GB left on the drive. When it's empty the writing speed is about 410-440 MB/sec but it never reached the advertised "520 MB/sec". My laptop is the latest generation best i7 available everything is set properly so the speed issue is with the drive itself. I can say "it's okay" but I'm disappointed about the writing speed because it's not what it's in the description.
Verified purchase: Yes | Condition: New
Lots of space, easy to fit, good value
Verified purchase: Yes | Condition: Pre-owned
Verified purchase: No