The laptop I'm using for testing is a Lenovo ThinkPad T500 in a 15" size class; full specifications are listed on the following page. Here we can see that the SF-19 easily accommodates it with plenty of room to spare. When placed on a desktop the angle is comfortable although the height is raised quite a bit, and even though the SF-19 itself felt very planted on the desk surface, the laptop had a bit of wiggle room as it had only minimal contact with the rubber pads along the edges. LED and USB operation is enabled simply by plugging in the USB 3.0 cable, however this laptop does not offer USB 3.0 support and the AC adapter must be used in order to get the fans spinning.
There are four points along the unit's bottom corners where the LEDs emit light from. Using the selector switch you can change from red to blue, green and several shades in between including purple and white, although some of the colors appear to be similar. When switched on, the LEDs fade in and out in a winking pattern, what NZXT calls a "breathing" effect. While this is not as noticeable under normal room lighting, it's actually kind of distracting when the lights are off.
Let's test the real purpose of the SF-19, as a notebook cooler.