The HCL HCL EZEEBEE AZ1046 also features advanced 6-channel audio hardware built-in on the Intel 945GM chipset motherboard which enables the system to produce sound on six different channels viz. 2 in front, 2 in rear, one sub woofer and one center speaker in a surround speaker system.But to be able to use 6 channels correctly a user would need to setup a complete set of 5.1 speaker system with 2+2+1+central speaker units. A conventional 2 speaker system would not allow intended use of 5.1 audio hardware.Windows Vista preinstalled HCL Ezeebee XP Z999 desktop PC offers ATX Cabinet with SMPS, 1.44 FDD, S-Video TV output, IEEE 1394 Port, 2 USB Ports and it comes with standard Multimedia Keyboard, optical mouse, Octa-X Headphone cum Mic and 2.1 ATP3 Altec Lansing Stereo Speakers with sub-woofer.