asus ta-b11 black mid tower case with grey bezel, 10x drive bays, fan, usb 2.0, audio, firewire, 350w psu, atx/microatx. asus ta-b11 grey mid tower case with grey bezel, 10x drive bays 4x 5.25", 6x 3.5", 2x usb 2.0, audio port, firewire, system fan support 2x 80mm front fans, 1x 80mm rear fan, adjustable cpu air-duct provides the best cooling effect to the system, support front and rear fans to expedite heat dissipation, key lock hole supports anti-robbery function, intelligently located usb port for multi device applications, spring-opened door for easy optical drive device operation, form factor atx/microatx, 350w psu.