I did some tests with a 1.5GB file, this USB 3 64GB HyperX Fury is announced in writing at 30MB / s read and 90 MB / s. A USB port 3 = write 125MB / s read 145 MB / s On a USB 2 port (thus slowed by key port = write 28MB / s read and 32.5 MB / s
No LED work but it does not bother me at all, rather it is the main speed and at that price I recommend it. Not tested in time since I just received today.