Antec Mini SKeleton , with external 90w power supply / ac-adapter , open to air design with handle , removable mb tray , chassis air guide on side panel , 0.8mm cold-rolled steel construction , 2 front usb+eSATA + audio in/out ; 1x 5.25", 4x internal 2.5" ; 1x150mm 3-speed multi color led fan + 1x 70mm fan - mini-itx only - expansion card required to be low-profile