I dont have crashes.
Works perfectly for my Hackintosh OSX Mavericks, 2.4 GHz and 5 gz Buetooth 4.0! keyboards and Apple trakpad fontionne for once without crashing all the time, this is nice
The cheapest that i ever had, by far.
All indicatios of use are in the packages, although télécharer drivers, one for lbluetooth, one for wifi. Links drivers are provided in it.
First of installing the drivers, remove the ancient map, lordi off, go to the device manager and install the drivers (the interest dou download them before because there are more, internet connection).
And here this is gone!