ATEN CS1142H4C 2-Port USB HDMI Dual Display Secure KVM Switch with CAC | PSD PP v4.0 Compliant

Your two machines sit on different security tiers and sharing a keyboard without cross-contamination isn't an option. You've seen the big-box stores list a KVM switch like it's a $40 HDMI splitter. This isn't that.
The ATEN CS1142H4C is a 2-port USB HDMI dual display secure KVM switch, NIAP certified to PSD PP v4.0. It shares one keyboard, mouse, two monitors, a speaker set, and a CAC reader across two sources of different security classifications — with unidirectional data flow, strict audio filtration, and an always-on tamper-proof design so nothing leaks between ports.
Switching is manual only: front-panel pushbuttons or the Remote Port Selector (RPS 1, sold separately). No software layer. No network path to exploit.
In the box: the switch, a power cord, and user instructions. Clean.
If your environment is government, defence, healthcare, banking, or any setup where an auditor will actually read the compliance docs, this is the unit that holds up. Add to cart when you're ready

• PSD PP v4.0 compliant, NIAP certified — passes the audit without a second look
• Shares keyboard, mouse, dual HDMI displays, speakers, and CAC reader across two sources of different security classifications
• Manual switching only: front-panel pushbuttons or Remote Port Selector (RPS 1, sold separately) — no software attack surface
• Unidirectional data flow, strict audio filtration, configurable device filtering, always-on tamper-proof design
• 2-port USB HDMI dual display architecture for secure multi-source desktops
• Package includes CS1142H4C switch, power cord, and user instructions