The Cooler Master CM 690 II Advanced Mid Tower Case
Two chrome strips accent all the black on the front and surround the mesh middle section. The entire section under the Cooler Master logo is well ventilated behind it and hides a 140mm blue LED fan working as the only intake to the chassis. At the top, the same mesh is used, but this time for removable covers, just to make installation easy and keep things well ventilated.
The "right" side panel, as Cooler Master called it, has no window. It offers ventilation via mesh passively, or with any fans, 80mm, 92mm, 120mm or 140mm to aid in the intake. The fans are optional, however.
The rear of the chassis is topped with two holes to allow for the passing of water tubing. Just below is a 120mm fan for exhaust taking up the room next to the rear I/O shield hole. Moving down you run into the 7 + 1 arrangement of expansion slots, while there are seven as they are typically found, the eighth is positioned next to them for additional controllers. This leaves us with the large hole at the bottom for the power supply.
Typically this panel is just flat without anything to highlight in most cases. Here I get to point out the CM 690 II Advanced has room for a fan to cool the back of the CPU socket. It only allows for an 80 X 15mm fan, but any air flow is better than none.
On the top you will find the front I/O first. This consists of a light power switch, e-SATA, two USB 2.0 port on either side of the MIC and audio jacks and the reset and power buttons. Just above the reset button there are two tiny LEDs for power and HDD activity. Just behind these, there is a removable cover for the HDD dock. Going a bit further, you run into mesh again. Underneath this is room for two 140mm fans and Cooler Master has filled one, the other is optional.
With the case spun around and the cover removed, you can see the hot swappable ports that are in the bottom of the angled depression. This allows for easy access to booting an extra hard drive, and the angle helps keep it in place.
Underneath the chassis you will find large, chunky, rubber feet in the rear and pads of rubber under plastic feet in the front. The rear feet surround a ventilated area for the fan on the power supply to breathe through. There is a screen covering the area for two 120mm fans in the middle and front of the floor. This plastic screen will need removal for access to the holes.