I bought the Netgear PS121 of these a couple of months ago in an effort to make our USB printer work as a standalone printer connected directly to our ethernet network. The printer is an Epson Stylus Photo 650.
It wasn't hard to get working but print spooling became very slow and it would leave Microsoft Word hanging after the printing was finished so I've shelved it and gone back to directly connecting the printer to a PC. The hanging issue is probably something to do with Word as other apps worked ok.