One USB-PS/2 console controls 8 computers; Cascade up to 2 levels - control up to 64 computers. Broadcast mode - operations simultaneously performed on all selected computers, software installation and upgrading, system wide shutdown, etc. Computer selection via front panel pushbuttons, hotkeys and multilingual on-screen display (OSD) menu. Video DynaSync™ - Exclusive ATEN technology eliminates boot-up display problems and optimizes resolution when switching between ports.