Corsair Obsidian 350D Micro ATX Chassis
As you can tell, the front of the 350D definitely looks like it belongs in the Obsidian series, with the full aluminium panel and venting around its edges. The top holds the I/O panel above the pair of 5.25" drive covers, while the lower section is removable to access a dust filter, without the need to remove the entire bezel from the chassis.
By pressing in at the top corners, the lower section opens downward until you can release a pair of tabs that keep the bottom of the plate in the bezel. Behind it you will find that dust filter. To remove or add fans here, you remove the filter and screw in the fans from there.
The front I/O panel offers a headphone and microphone jack next to the small reset button to the left. In the middle is the power button with the power LED and HDD activity lights on either side. Then the right side offers you a pair of USB 3.0 ports for easily accessed connectivity.
The top of the chassis offers these longer slits as a mesh panel to allow users to install optional fans. There are rubber grommets in the pair of 120mm mounting positions. If you want to use 140mm fans, you can, but you need to move the grommets.
The left side of the chassis shows that the front feet are part of the bezel, and the small feet at the back are designed to match. As for the side panel, the window used here stretches to within about an inch of the sides and offers a full view of the inside.
At the back the chassis starts with three break-away holes for optional water cooling, and is followed by the rear I/O and exhaust of the chassis. Taking it lower, you run into the five ventilated expansion slot covers, and the bottom hole is of course for the PSU.
The right side of the chassis is a dead match to the left, sans the window. There isn't a bump out here to retain extra wiring, but to help, these panels open like car doors as the pivot on the front of the chassis once the thumbscrews are removed.
Under the chassis you will find a dust filter for under the PSU that slides out the back for cleaning. You will also see, if you look closely, that there are screws to allow for the removal of the HDD rack that is on the floor.