Instruct: Classify Amazon reviews into positive or negative sentiment
Query: should have read the reviews first!

Although the product sort of works, it's totally unreliable. You can't just plug in your cables naturally. You have to carefully position the cable inputs in order to get a solid connection. Then, you can't touch the coupler or you will disrupt the connection. The plugs will not stay connected. There is no "click" from plugging in; it just loosely holds the cables.One good thing is the unit is cheaply priced.I have contacted the seller about it. Let's see if a new, actual functional unit is shipped to me. Will update accordingly.