Aten CS1316 KVM switch Black Category_Office Software Vibration: 7~800Hz Vibration: 7~800Hz and Original HP printing materials are designed to work together as a system to ensure uncompromising image quality up to four users and an administrator with a separate profile for each Auto Scan feature for monitoring user selected computers Hot pluggable add or remove computers without having to power down the switch Buzzer on off via hotkey and OSD Firmware upgradeable No software installation required Designed for desktop or rack mount (19" system rack hotkeys and multilingual on screen display (OSD) menu Two level password security only authorized users view and control computers