
I have a large music library in an Astell & Kern player, and transferring files through USB on the player to the computer is very slow. Taking the SD card out and plugging it into USB 3 port I was backing up the library at 148MB/sec. So much faster at only 20MB/sec.


I test my Sandisk memory cards on this card and can write much faster like about 63 MB/s. Really big improve than my old HP media reader at 16 MB/s - 20 MB/s. That is right, it's USB 3.0 and can work on USB 2.0 without problems. I got two for about 6 bucks on sale and really deal! I can't believe that really faster than my old media reader! I'm happy with them! Newegg rocks!!!

Seems to get the expected speeds from a 100MB/s micro SD card Inexpensive when purchased on sale
