I wrote Donny that my Asus W500 fits fine with the keyboard attached, although I don't need the keyboard for jobs. The spread of the holders is 7" to 7 1/2, so I don't believe the mini will fit.
My first impression was that it was built rather light for wear and tear. However, it holds my gear very securely, just don't load equipment on it.
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact