IOGEAR's GCS1784 4-Port Dual Link DVI KVMP Switch with 7.1 Audio marks a revolutionary step in KVM functionality by combining IOGEAR's Display Emulation Technology with the widescreen graphics resolution of today's 30+ inch monitors, supporting Dual Link DVI, 2560 x 1600 (higher than 1080p HD) and ultra-high resolution up to 3840 x 2400. The GCS1784 is equipped with IOGEAR's Display Emulation Technology* which remembers your monitor's ideal resolution and refresh rate (EDID), making it possible to boot all your computers simultaneously, switch back and forth between computers, and still maintain the ideal video settings of the monitor. It also features two USB 2.0 peripheral ports for asynchronously sharing USB devices between your computers. A powered USB hub may be attached to the peripheral ports for added functionality.