Of course to reduce its size ISK300-150 only supports slim optical drives, i.e., drives originally developed for portable computers. The only drawback is that this option increases the final cost of your computer, as slim drives are more expensive.
The front panel has a very sober and professional looks. The bay for the slim optical drive is protected by a cover, and ISK 300-150 has one eSATA port and two USB ports, plus the traditional microphone and headphones jacks. The additional of an eSATA port is an obvious plus.
The front panel of ISK300-150 is identical to the one used on ISK300-65.
In Figure 5, you can see the rear panel from the reviewed case. As you can see, the rear panel isn’t painted black. There is a rounded hole that on the ISK300-65 version is used to host the jack from the external power supply. Then we have an empty space for installing a fan controller for the second (optional) 80 mm fan and the three-speed switch for controlling the speed of the 80 mm fan that comes with the case. If you pay attention you will see “top” and “rear” written on the frame around these switches: to save money Antec used this part from another case instead of manufacturing a frame specifically designed for this case.
You can also see the power cord receptacle and the presence of only one expansion slot, which only supports slim expansion cards.
Also notice how the top cover is attached to the main chassis using silver thumbscrews.
Antec ISK300-150 comes with a stand if you want to use your computer sideways, see Figure 7.