... Scan Time:1-255 second (OSD adjustable)LCD Display:17 TFT LCD Resolution : 1280*1024 Brightness:300nits Contrast: ... hoursCertificate:CCC, FCC, CE Ordering information: 1KVM-1704H 17"TFT/Keyboard/Touchpad/100~240V AC Power/4 Port ... Switch2KVM-1708H 17"TFT/Keyboard/Touchpad/100~240V AC Power/8 ... Port Switch3KVM-1716H 17"TFT/Keyboard/Touchpad/100~240V AC Power/16 ...