Logitech Speaker System S120 2.0 Black just received - advertised as wireless but needs to be plugged into a computer port, has a cable connecting two speakers and requires AC power. what is wireless

We replaced another pair that were a few years old thinking they were no longer good only to find out they weren't speakers, after we got the new ones. but a computer setting. So who knows how many years the old ones will last. We kept the new ones anyway, so we had a spare. Good value for money.

They have been working fine for about three weeks now the sound is so low you can barely hear them. I'm pretty strict about ordering everything online. I will tell my kids that there is no more Amazon or any card that requires an online purchase.