This plugs into the 40-pin port on a motherboard and allows you to connect 2 SATA drives on the 2 PATA channels. I looked this up because I was wondering if this would work the other way and plug into a PATA drive and allow you to connect it to a SATA channel on your motherboard, but no, it only claims to work the other way.
If you look at the sales stats, they only had one of these. I wonder why they bothered to take the time to put it up?
Amazon Flash Deals are a way to sell remaining inventory in the warehouse.
If that last one isn’t sold, it sits there for years. Every product deserves a forever home.