Product Name ELYSIUM Product Number CCC-HSA0DS-U01~04 Dimension (W)230 x (H)618 x (D)663 mm (9.06*24.33*26.10 inches) Drive Bay 5.25" External x 12 with tool-free holders. (Including two 4 in 3 3.5" HDD adapter.) Expansion Slot 10 slots, 440mm free add-on card length. Motherboard Support HPTX, XL-ATX, E-ATX, ATX, Micro ATX, ITX (with backside hole for CPU cooler) Power Supply Standard P/S2 ATX/EPS power supply unit 1. Two PSU space on the top and bottom. 2. Intake airflow hole with dust filter. 3. Available for face upward and downward installation. 4. Within anti-vibration rubber. Cooling System Air-cooling Front Fan : Pre-installed 120mm white LED with black blades x 2                      (On the 4 in 3 HDD cages.) Rear Fan : Pre-installed 140mm white LED with black blades x 1                     (120mm fan is available) Side Fan : Pre-installed 200mm white LED with black blades x 1 CPU Fan : 80/120mm fan x 1 available Bottom Fan :  *If PSU was installed on bottom space: 120/140mm fan x2 or 200mm fan x 1  **If PSU was installed on top space: 120/140mm fan x3 or 200mm fan x 2 Top Fan :  *If PSU was installed on bottom space: 120/140mm fan x3 or 200mm fan x 2  **If PSU was installed on top space: 120/140mm fan x2 or 200mm fan x 1 The clearance of CPU cooler height is 185mm without side panel preinstalled 23cm fan interference. The clearance of CPU cooler height is 155mm with side panel preinstalled 23cm fan interference. Side panel 23cm fan is removable to top and bottom fan space If interference. Water-cooling Water pipe holes x 7 (with rubber cover) Available for 360/420mm radiator I/O Panel Top Panel: Power On/Off switch, USB3.0 x 2, USB2.0 x 2, e-SATA x 1, Audio in/out x 1 (HD Audio).