Antec ISK 300-65 Mini-ITX Case

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The cover is a U-shaped piece that fits like a clamshell over the bottom piece. This is a standard design for horizontal cases. The edges are folded over to hide sharp edges, and both the top and bottom halves of the case feel quite substantial due to the 0.8mm thick steel.

The fan is in a steel sub-frame
that has an opening for another 80mm fan, blocked by a plastic plate that can be removed. The fan sub-frame requires just one screw on the back panel to be removed. Bayonent mounts secure it to the bottom panel.

The drive trays are supported in a frame that secures to the back and front edges of the chassis. Two 2.5" HDDs can be installed on the top, and a slim optical drive in the lower portion.

The tray for two 2.5" drives slides in bayonet-mount fashion, and is locked by a single thumbscrew. The DC/DC board is visible under the drive tray. There are no options for soft-mounting the 2.5" drives, but various soft rubber grommets could be used.

With the drive tray completely removed, the DC/DC power board is exposed, with all the attendent cables. Given the amount of room around the DC/DC board, one wonders if the case could have been an inch or two shorter.

The cables on the DC/DC board are detachable, but all the outputs are on a single connector.

The cables between the back panel DC input connector and the DC/DC board hang in front of the fan. The cable is too short to tuck under or above the fan.


Now that you've seen the internal layout, the airflow design of the case should be apparent. The narrower slot vent on the top of the cover is the main intake, and the outside air is forced across the motherboard and the CPU area before being evacuated out the side (or top, depending on how the case is positioned). Since there are no other vents, this is the only air flow path through the case. It's a simple intelligent design that contrasts with many other mini-ITX cases: Some have inadequate vents for any kind of effective airflow and use fans that are far too small for quiet airflow, while others have too many vent openings, preventing any directed air flow over the hot spots.

Whether vertically or horizontally positioned, the airflow path remains the same: Intake via the rectagular slot on the wide panel of the cover, and exhaust through the 80x25mm fan.

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