12 x 5.25 Drive Bays: ODD x 12 or HDD/SSD x 12 (using 3.5' HDD drive bracket for 5.25' drive bay, 2 pcs included in the front) Excellent Air Cooling: Improve your system's cooling with a high airflow layout, complete with a steel grill front panel for optimal air intake, support up to 20 x 120mm fans Excellent Water Cooling: Multiple Radiators Support Top/Front support up to 480 rad, Side/Bottom (on PSU Cover) support up to 360 Rad, Rear support 140/120 Rad. Wide Compatibility: Support HPTX (13.6x15). XL-ATX E-ATX (12' x13'), ATX, m-ATX, mini-ITX motherboard; Max Graphics card length 20.8 in / 530, Max Vertical GPU thickness 1.93in / 49mm; Max CPU Cooler height 7.4 in / 190 mm; PSU up to 11.8in / 300mm. (System is not included) User Friendly: Removable Dust filter for easy maintenance. A roomy 20~38mm of space behind the motherboard for all of your cables. Released USB3.0 x2 + USB C x1, microphone, 3.5mm audio jack on the top.