Instruct: Classify a given Amazon review as either positive or negative.
Query: Nice add-on for your computer desk

This was the perfect add-on for my new computer desk (which I designed myself). Looks very professional, there is less cable clutter, and gives you 3 additional USB ports (takes 1 port from your computer and has 4 ports -- 3 on top and 1 on bottom), thus a net gain of 3 ports. The bottom USB port was perfect for the USB dongle of my wireless mouse. Could also be convenient for a device that you want to hide under the desk (i.e. perhaps you have one of those UPS that can send shutdown signal via USB cable?).Installation was very easy. The difficult part was drilling the 2" hole in the desk for the included plastic grommet. The USB hub snaps into the plastic grommet (slide it in and turn it 90 degrees to lock it in place).The documentation states that it is compatible with Windows, does not say anything about Mac OS. I can confirm that it works perfectly with Mac OS X Snow Leopard. Not a surprise, since this is just a USB Hub! No drivers to install.