Perfect
Simply great product! Very flat and thin, it does not weigh down the fans and is very easy to mount.
The connection is simple as the Halos can be connected in series, however the RGB cable is a Phanteks proprietary cable, to connect them to the motherboard you will need either an adapter cable or an RGB control box.
The backlighting is just great, bright as it should be, colours are good and the Mystic Light compatibility reacts as soon as they are plugged in, my BeQuiet! fans really look better now!