SX42DU-3 is a secure 2x4 4K30 UHD DVI-I mini matrix KVM switch. It enables viewing and controlling four computers with different security classifications simultaneously while securely sharing peripherals - keyboard, video, mouse, audio, and USB devices. It also enables assigning a USB port to a specific computer while switching other peripherals, such as when a USB smart card reader must remain mapped to a certain computer. SX42DU-3 provides the highest possible isolation between connected computers and is NIAP Common Criteria Protection Profile version 3.0 (PP3.0) certified. Highest Security by Design - NIAP Common Criteria Protection Profile version 3.0 (PP3.0) certification for peripheral Sharing Switch (PSS) devices. 4K30 UHD Resolution - Supports resolutions up to 3840ÃÃÂÃÂ2160 @30Hz. Independent Peripheral Switching - Supports independently switching video, audio, keyboard, mouse or USB devices between the primary and secondary computers. Work Freely Without Compromising Security - Present the display of any connected computer on both mini-matrix displays at the same time or extend the displays to additional 3rd and 4th external displays. Prevent Information Leaks - Block peripheral exploits, information leaks, eavesdropping, signal transmission, computer malware, hardware and firmware tampering. Filter USB Peripherals - Allow or block specific USB devices based on VID/PID characteristics. Smooth Switching Between Computers (Virtual Display Technology) - Automatically switch all peripheral control from one computer to another by dragging the cursor between each computer''s display border. Biometric/Smart-Card Reader Support - Connect a smartcard/biometric reader to the secure port to support user authentication across multiple isolated computers. Keyboard Lock Indication - Caps Lock, Num Lock, and Scroll Lock indication on front panel. APPLICATIONS Command and control centers High-security organizations Government agencies Military Financial institutions Any other organization that handles sensitive and confidential information