I just received the device a couple of hours ago so I can't confirm reliability, but the built quality feels really good.There are a lot of reviews on here that state that there is no software or that there are no drivers. The instructions on amazon clearly stated where to get the software to program the device and no drivers are required. Once programmed, it can be unplugged and moved around to any computer with any OS that accepts a USB keyboard (cause that is what is is).The program was bit difficult to figure out since what few instructions exist are in Chinese. But with a bit of playing around I figured it out within an hour.I was curious why each button allowed three functions. It turns out you can put three functions in each button and then use 1 button to switch "banks" using the SW function. So a 6 button device becomes a 5X3 device for 15 functions. You can change the color of the bank switching button to indicate which bank is active.There are also some really interesting modes to the RGB color transitions. They have Chinese labels but they can be easily figured out through trial and error. When I am in my password 'bank' I have the bank button blink red. In the Multimedia bank it is solid green and in the third bank it is blue. I don't know what I will do with it yet, it is an unexpected 5 button bonus.