Yes that's correct
I was going to make my own so I got all the parts together to make one. Then I found I don't have the time to prototype parts. So I thought I would buy one. . The photos and video are of the one I got form eBay. The link to the aliexpress is a kit of electrical parts I have that for the one I was going to ( May still do) make. But I can use the parts on the other if I need to. Not sure about the sub Bob now thow as I have a dedicated pc with a PP. Hope that's abit more clear. Thanks mick