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Introduction
CM 690 II Advanced (USB 3.0 version) makes it possible to take advantage of excellent airflow and water cooling options to vastly reduce temperatures on system components. The CPU mounting hole size has also been enlarged to make installing CPU heatsink backplates even more convenient, and the rubber grommets have been redesigned for improved cable management. Additionally, the CM 690 II Advanced (USB 3.0 version) is equipped with two USB 3.0 internal connectors for faster data transfer. The spacious mid-tower will keep enthusiasts happy with room for up to 3 Dual Slot graphics cards, high-end CPU coolers, top or bottom mounted water cooling radiators and 1.8"/2.5" drive adapters for easy upgrades.  

Features
*   Supports two USB 3.0 ports (internal)
*   Enlarged front and top mesh design for superb ventilation
*   Can accommodate an internal 120 x 240 mm radiator at the top and bottom
*   Dust-control filters for all meshed areas
*   Supports for up to 10 fans (up to 5 x 140 mm fans)
*   External SATA docking station (X-dock)
*   Rear tubing holes for water cooling
*   Includes 1.8" & 2.5" HDD and SSD adapters
*   More and redesigned rubber grommets for improved cable management
*   Larger CPU heatsink cut-out on the mainboard tray

 Specifications
Color Black
Materials Steel body / Plastic + Mesh bezel
Dimension (W / H / D) 214.5 x 496 x 528.8 mm / 8.4 x 19.5 x 20.8 inch
Weight 9.56 kg / 21.08 lb
M/B Type Micro-ATX, ATX, Mini -ITX
5.25" Drive Bays 4 (without the use of exposed 3.5" drive bay)
3.5" Drive Bays 6 hidden (4 removable), 1 exposed (converted from one 5.25" drive bay)
I/O Panel USB 3.0 x 2 (internal), USB 2.0 x 2, Mic x 1, Audio x 1 (supports HD/AC97 audio)
Expansion Slots 7+1
Cooling System Front: 140 x 25mm blue LED fan x 1 / 1200RPM / 19dBA
Rear: 120mm fan x 1 / 1200 RPM / 17dBA
Top: 140 x 25mm fanx1/1200RPM/19dBA(supports120/140mm fan x 2)
Bottom: 120mm fan x 2 (optional)
Left side: 120/140mm fan x 2 (optional)
Right side: 80 x 15mm x 1 (optional)
HDD cage: 120mm fan x 1 (optional)
Power Supply Type Standard ATX PS2 / EPS 12V  
2.5" Drive Bays 2 (converted from one 3.5” drive bay)
Maximum Compatibility VGA card length:304mm / 11.96 inch
CPU cooler height:177mm / 6.96 inch