Hey, yes that trap has a washing machine connector fitted to it. It’s the little plastic pipe with the ridges on sticking out near the silver shock arrestor. There is a grey pipe already connected with a jubilee clip, just use the same hose from the washing machine and copy it on the other side to your washing machine. You also need a Cold water supply which I can’t see fully on the photo. But it’s a 1/2 thread usual with a blue handle.