Once powered up, the fan controller starts to light up, you can select low, mid and high RPM levels each with a corresponding LED color.
You can control up-to 10 fans and tie them to front, top, HDD and GPU fans. The LED button can enable/disable LED fans (extra power connectors have been embedded into the wiring as well for these.
Here you can see the chassis finalized a little better. It looks a little thinner in the photo than it is in reality.
Here is a left side view. No window but again, lengthy cards will fit just fine -- you can insert four of them, dual-slot. Motherboard installation is rather simple. The chassis will allow all standard and non-standard formats like Micro ATX / ATX and XL-ATX motherboard form factors so the entire scope is covered.
And the last photo -- all fans are PWM controlled, so if your motherboard allows it, you can control the fan RPM. The fans themselves are as noisy as you want them to be, but overall the chassis will produce a very low to normal noise level if you keep all fans at say normal rotation, and that will offer you a truckload of airflow. The CM Cosmos II is an excellent chassis alright.
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