Vertiv Avocent Cybex SC900 Secure Desktop KVM Switch, Dual Head Monitor, 4 Port, Common Access Card, NIAP Version 4.0, TAA Compliant (SC945DPHC-400) Secure Desktop KVM Switches | Secure KVM Switch | Dual Head | NIAP Certified | Secure Keyboard | 2 to 8 Port, Secure Isolated Channels | Running up to UHD 4K at 60Hz