A:
Hello,
Yes, you are right, it is up to 5Gb/s using an USB 3.0 port. Unfortunately, the Best Buy website, does not always have the correct specifications/features/information on the products it sells, it's always a good idea to do a little research, ideally in the actual manufactures' website.
here is the link to the item description on the manufactures' website, scroll to the bottom.
http://store.westerndigital.com/store/wdus/en_US/pd/ThemeID.30153100/productID.280927300