Materials - Exterior: Steel, Plastic, Expansion Slots: 8, 2.5" / 3.5" Drive Bays (Combo): 9 (4*HDD bracket, 5*Screw+Rubber), I/O Panel - USB Ports: 1x USB 3.2 Gen 2 Type C, 4x USB 3.2 Gen 1 (3.0), I/O Panel - Audio In / Out: 1x 3.5mm 4 Poles Audio Jack, 1x 3.5mm Mic Jack, Pre-installed Fans - Rear: 2x SickleFlow 120 ARGB PWM, Pre-installed Fans - Bottom: 1x SickleFlow 120 ARGB PWM, Warranty: 02 Years, H700-WGNN-S00.