USB3 a 30MB/s

I’m transferring a total of 14 GB for the USB3 External Hard WDBKXH0010BBK NEBZ and-transfer rate in this maximum to 30MB / s.
All drives are upgraded, including firmware, which after passing this atulalização to 20MB / s.

Now I’m afraid to upgrade anything else and diminish further.

I could not image this forum post, follow the link below to the situation.

Verify if you are using a USB 3.0 port on your computer, if you are, check if you have the latest USB 3.0 drivers available for your computer.