My HP JetDirect USB Wireless Print Server was defective. It didn't work at all no instructions on how to install it were provided neither was, I searched high and low and finally found how to install it after trying numerous way it still didn't work.
This device works great, allows me to place the printer anywhere there is power.
Not plug and play, but if patient and follow the cryptic instructions all will work well.
It requires a separate server or equivalent (Router). That was not made known in the literature. Install was easy, but getting it to function took over 5 hours on the phone with HP Tech Support.