Is it time to retire the external hard disk? Copying content from one PC to another used to feel like a chore, but with the proliferation of solid-state drives and updated USB standards, transferring gigabytes of data has become child's play.

But there are still plenty of consumers clinging to mechanical drives that serve a basic purpose for an insignificant fee. Adata is hoping to lure such users with a refreshed range of external SSDs that includes the sleek, stylish and fast SC660H.