Technology February 10, 1987 WHAT ARE THESE MYSTERIOUS 3380 AFF AND B4F DISK DRIVES? By CBR Staff Writer What are these mysterious 3380 AFF and B4F disk drives up on the Dial IBM service? Watch this space. View all newsletters Sign up to our newsletters Data, insights and analysis delivered to you By The Tech Monitor team Sign up here Reports View All Topics in this article : CBR Staff Writer CBR Online legacy content