The PC-389-C by APEX is an ATX Mid Tower Computer Case in a steel finish and sporting a well-folded edges. It measures 17.50" x 7.25" x 16.00" with a simple layout for installing hardware components with ease. It's designed to be compatible with Micro ATX and ATX motherboard formats. It features three External 5.25" Drive Bays that allow you to add CD/DVD ROM/Writer drives, two external 3.5" drive bays, and four internal 3.5â hidden bays for incorporating add-on hard disc drives. These bays will support any additional storage requirements. The PC-389-C also features two front USB 2.0 ports for the convenience of connecting USB compatible devices. The design of the PC-389-C is thermally optimized for improved cooling and longer shelf life.