StarTech.com 4 Port DisplayPort KVM Switch w/ Audio - USB, Keyboard, Video, Mouse, Computer Switch Box for 2560x1600 DP Monitor (SV431DPUA) - KVM / audio / USB switch - 4 x KVM / audio / USB - 1 local user

Hotkey and push-button switching Supports DDC2B for monitor detection Integrated 2 port USB 2.0 hub Supports hot-plug, un-plug and link status-failure detection Native DisplayPort resolution of 2560x1600 @60Hz; beyond 1080p 7.1 Channel High Definition Audio support plus dual channel Analog Stereo and Microphone Full plug-and-play support with USB keyboards, mice, and connected peripherals Supports a maximum resolution of 3840x2400 at lower refresh rates OS independent - No driver or software required User-defined scan time intervals