This motherboard supports Dual Channel Memory Technology. Before you implement Dual Channel Memory Technology, make sure to read the installation guide of memory modules on page 20 for Asrock H67M-GEHT Extreme installation. The maximum shared memory size is de ned by the chipset vendor and is subject to change. You Asrock H67M-GEHT Extreme choose to use two of the four monitors only. For microphone input, this motherboard supports both stereo and mono modes. For audio output, this motherboard supports 2-channel,[…]