Great for older laptops, be wary though!
I've had two of these so far and they've been great, adding a fair bit of extra speed to data transfers from USB hard drives. I did note that USB 3 memory sticks didn't seem a huge amount faster than on a USB 2 port but I have not proven this, USB 3 external hard drives seemed a lot faster though.
This device draws it's power from the laptop, don't overload the device but it handles three USB devices without too much of a problem.
The only real issues I have found is that the device gets very warm, the supplied drivers for Windows 7 don't work, the middle port is quite lose on both the devices I have. On a personal note it annoys me that when I unplug a USB device I often end up pulling the card out with it.
The drivers are available online from the manufacturers website for Windows 7 and 8. I found that Windows 10 has it's own driver already.
Bottom line - It's cheap and has a few niggles but it gives you almost USB 3 speeds for older laptops.
Verified purchase: YesCondition: New