The ServSwitch Secure KVM Switch cable from manufacturer BlackBox is a specially developed connection cable for use in security-critical IT environments, particularly in conjunction with ServSwitch Secure KVM switches. It serves as a required component to maintain the TEMPEST certification of KVM switch systems. This certification ensures that no unauthorized electromagnetic emissions occur, which could enable secret data transmission. Thus, the cable is an integral part of security-compliant IT infrastructures, especially in military, governmental, or sensitive corporate environments.

Applications

The cable is designed for connecting computers with VGA, USB, or PS/2 interfaces. It is used in systems where multiple computers are operated via a KVM switch, where security requirements demand special emission damping. Its use is particularly necessary when the TEMPEST certification of the entire system cannot be ensured by other components alone. The models in the EHNSECURE series are designed for different peripheral requirements, with model EHNSECURE3 specifically intended for systems with USB-CAC cards (Common Access Card).

Functions and Features in Detail

A central feature of the cable is the integration of large ferrite cores on each cable strand. These ferrite cores serve to dampen electromagnetic interference and prevent signal radiation that could potentially be intercepted and read. The cables are constructed to meet required security standards without impairing signal quality or the functionality of connected devices. Model EHNSECURE3 additionally offers a separate connection for USB-CAC data transmission, making it suitable for applications involving smart cards or identity-based access systems.

Technology Explained Simply

The main cable strand features an HD26 interface, which connects directly to the ServSwitch Secure KVM switch. This connector is standardized for KVM switch systems and ensures stable and reliable signal transmission. The VGA connector at the other end of the cable is specially configured: Pin 9 is removed, while all other pins are populated. This configuration is typical for KVM systems to ensure signal integrity and compatibility with switch systems. Additional USB and PS/2 connectors enable connection of keyboard, mouse, and other peripheral devices.

Compatibility and Accessories

The cable is specifically developed for use with BlackBox ServSwitch Secure KVM switches. It is not intended for general KVM applications without security requirements. Models EHNSECURE1, EHNSECURE2, and EHNSECURE3 differ in their additional connectors: EHNSECURE1 provides PS/2 connectors for keyboard and mouse, EHNSECURE2 includes a USB Type-A connector, and EHNSECURE3 includes a USB Type-A connector for keyboard and mouse, plus an additional USB Type-A connector (yellow) for the USB-CAC card. The cables are not intended for direct connection to computers without a KVM switch.

Installation and Mounting

Installation is performed by directly connecting the HD26 connector on the cable to the corresponding port on the ServSwitch Secure KVM switch. The other ends are connected to the respective computer ports (VGA, USB, PS/2). Cable installation requires no special tools or additional components. The cables are designed for permanent use in IT infrastructures and can be used in rack or desktop mounting.

Operational Advantages

Using the ServSwitch Secure KVM Switch cable ensures compliance with TEMPEST standards, which is essential for security-critical applications. The integrated ferrite cores provide effective emission damping without affecting signal quality. The cables are designed for reliable and stable connections and support simultaneous use of multiple peripheral devices. The warranty is 2 years Double Diamond™ (Standard), indicating the product's quality and durability.