Key Features: Model Number: E-6803B Case Material: 0.5mm SGCC Form Factor: ATX / Micro ATX Dimensions : 173mm (W) x 365mm (H) x 368mm (L) PSU Sata Connectors : 1 PSU 24 Pin: Yes Compatibility: Intel and AMD Motherboard Supports: Compatible with Motherboards up to 305mm x 244mm Front I/O Ports: USB2.0 x 2, Front Audio Connector, Front Microphone Connector External Bays: 5.25" x 2, 3.5" x 1 Internal Bays: 3.5" x 2 Expansion Slots: 6 Free fan spaces: 1 x 8cm/9cm