A Closer Look - Inside
To gain access to the interior of the D-Frame Mini, simply remove the four aluminum screw caps that hold each glass panel in place. The interior itself is actually quite simple as it consists of a solid aluminum plate that acts as a motherboard tray and three individual trays for hard drives. While there is no apparent means for cable management, In Win did include some plastic clips one may screw onto the backside of the motherboard tray to route cables through to one of the openings.
There are several openings around the Mini-ITX tray, so you should be able to route each cable to its connector efficiently. Unfortunately, there is no opening in the tray itself to allow for easy access to a CPU cooler's backplate. Considering how thick the aluminum plate is, such a hole would not have compromised its structural integrity, while also resulting in a lighter chassis and less material used.
In the front - if you can call it that - are the three solid trays hard-drive trays, each held in place by a spring-loaded thumbscrew. The aluminum plate next to the PSU bay in the rear comes with large openings below and above the In Win branding, which allows for cables to easily be routed into the chassis. In Win also included a frame for two 120 mm fans on the bottom of the chassis. This same contraption may be used to install a 240 mm radiator instead, which makes the D-Frame Mini quite the interesting chassis for liquid-cooling enthusiasts.
All the cables within the enclosure are sleeved black and of standard variety. In Win even includes both a 2-pin and a 3-pin power LED connector instead of two separate 1-pin connectors.