I dont know if this is of help to anyone.
In hindsight everything is clear!: Connecting the two devices was hopeless- The D-Link connected and then I had a crash sometimes with a BlueScreen. Tried various things (Apple Macs with cards connected to VFrtzBox with no problems). So D-Link was problem.
Updated driver from D-Link site i.e. download the zip and run setup after deinstalling previous versions (program plus driver-hardware manager). And ran with no problems- massive relief no more tripping over cables ;-)