... various operating system: Microsoft, Linux, Unix, etc.SpecificationModelKVM-1504H KVM-1508H KVM-1516H /Direct 8, Max, 256 / Direct 16, Max, ... 512Cable portD-SUB15 (LCD, PS11/USB keyboard, mouse),OSD switch SupportSwitch ... OSD menuSwitch Scan Time1-255 second (OSD adjustable)LCD Display15” TFT LCD Resolution , 1024*768 Brightness,250nits Contrast,400 to ...