Instruct: Classify a given Amazon review as either positive or negative.
Query: Surge protection and power control

The Tripp Lite power controller has a pretty heavy duty surge protector and also lets you switch off/on various components of your computer system, saving the power drain of "wall warts" and other energy-hungry parts of your system. It sits under your monitor, out of the way, and is far more usable than power strips with a single on/off switch. The design of the product is clean, unobtrusive, and works very well (as are the majority of products from this company). Amazon shipped it very quickly.