Cooler Master CM 690 III Case Review

The Bottom and Rear Panels

The bottom panel of the CM 690 III has a big removable air filter covering the power supply fan and the opening for a 120 mm optional fan.

Figure 9: bottom panel

Figure 10 shows the air filter, which can be removed with no need to lift the case.

Figure 10: filter removal

The back panel of the CM 690 III is painted in black, with green slot covers. The power supply is installed in the bottom of the case.
There are three openings, one with 0.63” (16 mm) and two with 0.98” (25 mm) in diameter for an external liquid cooling system. These holes are covered by rubber covers.
The case has seven expansion slots, plus one transversal slot (for installing extra port connectors) with meshed removable covers.
The product comes with a black 120 mm fan installed on its rear panel (model A12025-12CB-3BN-F1, 1.92 W, no more info available).

Figure 11: rear panel

Let’s now take a look inside the CM 690 III.