Given the task definition and input, reply with output. Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

I've read some people may have gotten faulty ones, but the one that I got works. It has 4 ports to use, and connects to the computer via usb. There are 4 switches on the back, they power on/off each one of the usb slots. This works great for expanding the number of usb ports you have.
Positive Review