Think Big. Build Small. O11D MINI adding to the O11 Dynamic series, the classic and modern looking. A case that would accommodate the maximum number of water-cooling configurations without being oversized. With a modular back panel design, the user has the option to choose from 3 slots/ 5 slots/ 7 slots I/O shield to optimize the case to the configuration of users choice. Supports mini-ITX, micro-ATX, ATX, and E-ATX motherboard sizes. and up to 9 fans to cool the chassis.