All keyboard have drivers, it is just a question of if a suitable drivers are loaded automatically or not.
(Standard drivers are like, i8042prt.sys & kdbclass.sys)
But I also just read this post, which sounds similar to your problem.http://geekhack.org/index.php?topic=23304.0
They are claiming that,
"The connection between the usb wire and PCBA board is loose . just get a new one .
this problem is common on the fisrt batch of mini 84, in China, Noppoo will offer you a new usb wire for free to replace the old one. They fix this problem in the later batch , the white pbt version does not have this problem ."