Why do people post reviews which downgrade products just because of their own stupidity.
Look at the product - its obviously a USB connection, and its obvious it has to go on the printer else how else is a non-wireless printer going to suddenly become wireless enabled? If you cant figure that out, then go do some research first rather than impacting a products review rating.
per HP blurb (not on amazon, hence me posting this) ***This easy to install printer adapter allows you to print wirelessly--from your wireless PC, notebook, PDA or other wireless device to your printer. Compatible with the Officejet H470***
So if you have that, get this. If not, find one compatible with your printer...but if your printer has no USB port, get a new printer before trying to go wireless.