Because it wasn't detecting WiFi. And, by the way, it's a little duplicitous to say it has WiFi only to discover that  means an adapter, which takes up one USB port. Fired it up, wasn't showing any WiFi networks; tried the dongle on another computer--as dead as a door nail. I bought another one, then had to do some reconfiguration magic to get it going. Now it's running like a champ, although truth to tell, I'm not running it very hard. But it's doing what I bought it to do: act as a backup unit in these uncertain times. It was money pretty well spent.