There were even business card sized and shaped ones. I remember an article in a computer magazine which warned against using them in the brand new generation of

There were even business card sized and shaped ones. I remember an article in a computer magazine which warned against using them in the brand new generation of quad speed drives because the unbalanced mass would ruin your expensive CD-ROM drive. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrOMTr7kr9UzWCYq3iHO8kolxKo0wBuPzjlQ&s https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSrOMTr...