The Cooler Master CM 690 II conforms to the Micro-ATX form factor and so can accommodate motherboards with form factors ATX and Micro-ATX.
It is made of Steel and its dimensions (LxWxH) are 528.8mm x 214.5mm x 511.8mm.
|Form Factor||Micro-ATX||Side Fans||2|
|Motherboard Form Factors||Side Fans Size||140mm|
|Material||Steel||Side Fans Speed||1200 RPM|
|Expansion Slots||8||Rear Fans Size||120mm|
|5.25″ Drive Bays||4||Rear Fans Speed||1200 RPM|
|3.5″ Drive Bays||6||HDD Fans||1|
|2.5" Drive Bays||0||HDD Fans Size||120mm|
|Tool-less Rails||yes||HDD Fans Speed||1200 RPM|
|Width||214.5mm||Bottom Fans Size||120mm|
|Height||511.8mm||Bottom Fans Speed||1200 RPM|
|Front Fans||1||IO Display Panel||yes|
|Front Fans Size||120mm||Front USB 2.0 Slots||2|
|Front Fans Speed||1200 RPM||Front USB 3.0 Slots||0|
|Top Fans Size||140mm||Audio IO||yes|
|Top Fans Speed||1200 RPM|
The Cooler Master CM 690 II has a the Micro-ATX form factor. Micro-ATX is a smaller version of the ATX standard which is designed to make your case and the system therein lightweight and portable. Using the Micro-ATX standard, the case can house motherboards and power supplies with form factors ATX and Micro-ATX. The dimensions of the case itself (LxWxH) are 528.8mm x 214.5mm x 511.8mm.
The Cooler Master CM 690 II has eight expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has four 5.25" drive bays, which is enough to house an optical drive and a couple of hard drives, while still having space for plenty more HDDs with the six 3.5" drive bays that are also available. There are no 2.5" drive bays, though, so any SSD or laptop-sized HDD installation would require an adapter. Installation of hard drives into these drive bays is made all the more easier by screwless rails that allow tool-less mounting.
Made primarily of Steel, the Cooler Master CM 690 II is built to be strong and well-ventilated. Steel cases are generally fairly cheap and sturdy, but also tend to be quite heavy. Whatever your case's material, it is important to keep a consistent airflow so that heat doesn't build up inside. It is therefore advised that you make use of the available built-in case fans and fan installation sections.