Airflow optimized – mesh on front panel, large vents in the top, rear, bottom, and on the left side panel. Super Speed USB 3.0 port for 10x faster data transfer and 2x faster phone/tablet charging. Comes with a silent 120mm red LED fan in the front; supports up to 4 fans. Large side panel window with fan mounting. Supports high-end graphics cards (GTX 690 & HD 7990). 7 HDD bays (3 tool-free) and 7 expansion slots for great addons.