Default Hannspree HSG1279 windows 8 usb driver

Hi All,
I try to connect my Hanspree SN1AT71W on windows 8.1
In System Hardware i have HSG1279 usb driver. Where is this usb drivers? I wanto to deploy and test my app with this devices..but still I have not found a way to do it ...PLEASE help me?

Thank's an advanced.
Marco.