The CM 690 II Advanced raises the bar again with practical improvements over the top-selling CM 690. The spacious mid-tower will keep enthusiasts happy with room for up to 3 VGA cards, high-end CPU coolers, top or bottom mount water cooling radiator and 1.8"/2.5" drive adapter. It also features much improved airflow with oversized mesh and enough space for up to 10 fans. Maintenance will be a breeze with the tool-free drive bays, new cable management and CPU cooler retention hole. With Power Supply: No Power Supply Mounted: Bottom With Side Panel Window: No External 5.25" Drive Bays: 4 (without the use of exposed 3.5" drive bay) External 3.5" Drive Bays: 1 (converted from one 5.25" drive bay) Internal 3.5" Drive Bays: 6 Internal 2.5" Drive Bays: 2 (From 3.5" HDD Cage) Front Ports: USB 2.0 / Audio / e-SATA