Could be great, but an absolute no-go in lack of compatibility

++ The keystrokes are very pleasant.
+ The (gradual) adjustable lighting is nice (even if you need to set anew again and again, because the last setting is not saved)
+ The modifier keys work and are reasonably intuitive to use (although I personally have no purpose for it)

BUT: The keypad is the first that I know of that has compatibility issues. It works on some computers just not right. One problem I've seen setups where a KVM will be used and with different operating systems. The keyboard then spamt to the computer with numbers and you can make any entries.
Jaja somewhere on the package is safe "only compatible with XY", but that I read as often as Policies, EULAs, and the like. There are certain standards for keyboards and to be respected. Just thinking, if I want to use in an emergency a Live System for data recovery, fear did that my data is gone, it might be necessary urgently to something and then fails on the keyboard .... just because I 100 for a light thing instead of 10 have spent on something functioning.

I would even buy this keyboard ever again and recommend to anyone (including any user of compatible systems, as live systems, usually Linux baisert, often the last straw are to be ignored in an emergency).