Before I bought this product, I went straight to the reviews and comments as any sensible individual would. However, this left me even further confused, and it appeared as though each review was on an entirely different product from the last. Well, now that I'm an owner of this device, I'll throw my hat in that ring and attempt to sort out the mess of conflicting and illegitimate reviews.
Firstly, I would like to point out that any reviews stating the compatibility issues with external harddrives are completely based on fact. My external harddrive would not work with the new device, so thankfully I have a PS4 Pro, as I simply plugged it into the back USB port. However, if you are the owner of an original PS4, or a PS4 slim, beware as there is now compatibility list for external harddrives, so buy this product at your own risk. PS4 Pro's - Your Good!
Secondly, for the reviews indicating that the USB ports do not align with certain PS4 versions, that is false. When removing the product from it's box, there is a piece of white cardboard wrapped around the device (very hard to remove without proper cutting utensils, mind you) that has lots of words and big, black letters. Those are instructions, and if some people were to have read those without tearing into the device like lions to carrion, they would see that you simply unlock the ports, swap the USB inserts around to the respective port, lock it back and plug it into any of the PS4's.
And lastly, for those who are stating that the product is only useful for charging controllers, this is once again false. I have my official, wired Mini-Controller plugged into the front, yes, but I also have my PSVR V2 plugged into the front, and it works perfectly fine. I don't have any other USB compatible devices to try on it, but I imagine, with the exception of external harddrives, this product works well with any others.
Hopefully this has cleared up some of the garble, and even more importantly, I hope this review helps any to distinguish whether or not this device is worth their money.
Summary: PS4 Pro users will have to plug external harddrives into the back port. Original PS4 and PS4 Slim owners should only purchase this device if they are not intending to use it with an external harddrive, or they are CERTAIN their external harddrives are compatible.