1U chassis support for max. motherboard size - 13.68" x 13" E-ATX; optimized for WIO motherboards: - 600W High-efficiency Power Supply with Digital Switching Control - 8x Hot-swap 2.5" SAS/SATA HDD bays - 3. Expansion slots: 1x Low-profile and 2x Full-height slots (via riser card) - 4x 40x56mm counter-rotating fans - Supports motherboard sizes 12" x 13" E-ATX & 13.68" x 13" - Optimized for WIO motherboards