StarTech.com 8 Port VGA KVM Switch - 1U Rack Mount - USB VGA KVM Switch with Audio - 1920 x 1440 @60hz - KVM Video Switch (SV831DUSBAU) - KVM / audio switch - 8 x KVM / audio - 1 local user - desktop - for P/N: RK3236BKF, RK4236BKB, RK4242BK24, RK4242BK30

Control up to 8 VGA and USB computers from a single keyboard, mouse and monitor. The SV831DUSBAU 8 Port Rack Mount USB VGA KVM Switch (with Audio Cables Included) allows you to control up to 8 USB computers using a single keyboard, mouse and monitor, and features Audio and Microphone ports to switch between audio signals as well as PC ports.
Based on a 1U rack mountable slim form factor design, this 8 Port USB KVM uses rear cable connections to maximize space efficiency. Multiple KVM units can also be connected (cascaded) together for control of up to 64 computers, ensuring a scalable KVM solution that can be expanded as necessary.
To ensure seamless operation, the switch features automatic and manual scan modes, supports both hot-key and front panel push-button switching, and features a convenient OSD (on-screen display) for added configuration options.