Windows startup issues when USB keyboard is attached

I have the daskeyboard model s professional for mac. Your question prompted me to look at how the keyboard is plugged in. I tried various configurations and discovered that the actual conflict appears to be with the USB hub that is integral to the keyboard (it has two usb 2.0 ports). Fortunately they have a dual usb plug for the keyboard. One is for the keyboard itself and the other is for the usb hub. If I just plug in the keyboard side of the dual plug and not the usb hub side it works fine and boots great. As soon as I plug in the hub side it freezes on boot.

Daskeyboard does not seem to have any drivers available other than those that come with windows pnp. Looked at the device manager and event viewer logs and found nothing conclusive. All devices are reported as functioning normally and only information entries in the EM logs. When I plug in the usb plug after startup all seems to work normally. USB drives plugged into the keyboard usb ports mount and read normally. When I first plugged the keyboard in after starting in windows the pnp popup showed up and reported that all drivers loaded and new devices were ready for use. So, perhaps the driver is inhibiting startup but it must be using some sort of driver present as a part of windows or installed via windows update. Does seem to load a driver signed as daskeyboard and another for the usb hub functions.