Corsair’s Obsidian Series 250D Is Mini-ITX. 650W 80plus Gold PSU. Corsair 120mm Case Fan A1225l12s-2 12vdc 3-pin. Two expansion slots and 290mm of internal clearance allow the use of any current stock graphics card. Supports all modern ATX power supplies, with 200mm of PSU clearance. Two tool-free 3.5″/2.5″ combo bays. Two tool-free 2.5″ only bays oFull-size 5.25″ drive bay. Two front mounted USB 3.0 ports for easy peripheral or external storage device connection. Two high-airflow fans are included (1x AF140L and one 1x AF120L) for excellent airflow and low noise levels. Room for up to 5 fans. Front – 120mm or 140mm. Modular tool-less drive caddies can be accessed from the rear of the case. A pair of 3.5″/2.5″ drives and two 2.5 only drives can be simultaneously mounted. Full-size 5.25 optical drive bay. Thumbscrew side panel removal and expansion slots. Tool-free 3.5″, 2.5″, and 5.25 drive bays. Easily accessible (and removable) front, side, and PSU dust filters. Excellent cable routing with multiple tie-down points for improved airflow and cleaner, neater builds. Two USB 3.0 ports and headphone/mic jacks in the front panel for easy access. Height x Width x Depth. 11.4 x 10.9 x 13.81 inches. 290mm x 277mm x 351.2mm.