cooler master cm stacker 810 (rc-810) tower case expandability supports up to 11x 5.25” drive bays. moveable front i/o control panel with 6 x usb 2.0 connections. compatible with micro-atx, atx, e-atx 12x13, w-atx 13x16 cooling full mesh front panel provides superior airflow; fully supports up to 3 x 120mm super silent fans. 2 x 120mm super silent exhaust fans. assembly tool-free installation. spacious interior design to maximize the flexibility of installation process. structural removable motherboard tray frame. strengthened body structure with 1.00mm steel plates. superior mechanical design for greater stability.