RAIDMAX DELTA I DELTA-I-WB Black Steel / Plastic ATX Tower Case Motherboard Compatibility: Micro ATX / ATX / Mini-ITX Front Ports: 2 x USB 3.0/ 2 x HD Audio 120mm Fans: Front: 3 x 120mm or 2 x 140mm Rear: 1 x 120mm / 140mm (1 x 120mm Pre-installed) Top: 3 x 120mm or 2 x 140mm Power Supply Mounted: Bottom Internal 3.5 Drive Bays: 2 (Compatible with 2.5 HDD or SSD) Internal 2.5 Drive Bays: 2 + 2 (convert from 3.5 HDD brackets) Expansion Slots: 7