Stdbas..
AFAIK the HWU54D uses the Envara WIND502 chipset and Envara is no more and there is no Linux driver
. I could be wrong but as far as I can see the zd1211 driver does not have much to do with it.
I downloaded the driver from Hawking in an attempt to get it to work under ndiswrapper but I never got anywhere. I am not sure if it will ever work.
YMMV
Norm