Most helpful critical review
I needed to connect the 5V to make it work and every 20 hours it drops connection.
on 22 August 2014
As I was only planning on running one or two USB 3.0 devices to start, I decided to try using it without connecting the 5V power supply. Whilst others have found that they can get away with this, I could not. Without connecting the power, none of the USB devices would work. It did install the driver and detect the hardware, however in my instance the optional power feed was required.
Unfortunately in two days of testing I have noticed the device has become completely unresponsive on two occassion's. The first I was conducting a comprehensive extended test on my external USB hard disk, after 20 hours the USB card decided to cease working, especially frustrating as I only had 3 hours of testing left to do. After this point, the card would simply not respond, a system reboot was required.
On the second occassion I only had a USB 2.0 printer attached and a bluetooth dongle. Simultaneously both devices lost connection and once again the device was unresponsive.
I am now trying an alternative driver to see if that fixes the problem, however if I experience another connection loss then I will RMA this product.
Finally the inbuilt driver software GUI will always sit in your system tray, and the GUI looks like it was designed by a classroom of school children, infact that is an insult to school children. Its not professional, but then again its not a major sticking point.
So in summary my bullet points are:
1. I do not recommend buying this device.
2. If you do purchase it, I strongly recommend getting the optional 5v power cable.
3. Be watchful for random disconnects.
4. Spend a few pounds and get a better quality product.