A metal brushed front door hides the the optical drive bays.
Thermaltake's press releases always leave a lot to be desired, but one thing it made clear in announcing its new Urban S21 mid-tower is that it's designed for users who look for "everything but a flamboyant appearance." In other words, simplicity and understated elegance is the name of the game, as opposed to over-the-top aesthetics that scream, "Hey, look at me!" Playing a key role in Thermaltake's design is the use of brushed metal.
A brushed metal front door masks the three optical drives that sit behind it. Up on top you'll find a pair of SuperSpeed USB 3.0 ports and a headset jack, all of which are also surrounded by the brushed metal motif.
There are two pre-installed 120mm fans, one in the front (intake) and one in the back (exhaust), and you can add up to three more (top, side, and bottom). The case also supports liquid cooling solutions with pre-existing cutouts for 1/4-inch tubing.
Otherwise, the S21 is a fairly standard mid-tower with an all-black interior, tool-less drive installation, and cable routing amenities. It will be available to purchase sometime this month, though Thermaltake didn't say for how much.