At the very bottom of the front bezel, hidden behind a hinged flap are two USB 2.0 ports, one IEEE1394 (Firewire) port, one headphone and one microphone jack. The ports are connected via a series of extender cables which reside inside the case and must be connected to the appropriate motherboard headers prior to use. Consumers will need to refer to their motherboard manual for proper pin placement of these cables.



Link: MTB