StarTech CK4-HPD404C 4-Port Quad-Monitor Secure KVM Switch

Overview

The StarTech CK4-HPD404C is a NIAP Protection Profile for Peripheral Sharing Devices (PSD) 4.0 certified, 4-port quad-monitor KVM switch engineered for high-security environments where physical isolation between connected computers is not optional — it is a compliance requirement. If your operators need to control four separate workstations across four simultaneous displays without any cross-contamination risk between network domains or classification levels, this is the switch built for that mission. The all-metal chassis, multi-video-interface host connectivity (DisplayPort, HDMI, DVI-I), and strict NIAP PSD 4.0 certification distinguish it from commercial-grade KVM switches that have no place in classified, government, or regulated enterprise workflows.

Explore the full StarTech product catalog for compatible peripherals and cabling solutions, or browse the broader KVM switch category to compare configurations.

Key Features

• NIAP PSD 4.0 Certification: This is the current and most stringent NIAP standard for peripheral sharing devices. It enforces hardware-level isolation between ports — meaning no data can traverse from one connected host to another through the switch fabric. This is the certification required for U.S. federal, DoD, intelligence community, and similarly regulated deployments. Without it, your KVM switch is not admissible in classified environments.
• 4-Port, Quad-Monitor Configuration: Each of the four host ports drives up to four simultaneous displays, so your operator console never loses visibility when switching between workstations. For SOC analysts, intelligence workstations, or financial trading desks where multi-screen awareness is critical, dropping to a single display during a host switch is not acceptable — this configuration eliminates that problem.
• Mixed Video Interface Support (DisplayPort + HDMI + DVI-I): The host side provides 8x DisplayPort, 4x HDMI, and 4x DVI-I connectors, while the console side includes 2x DisplayPort, 1x HDMI, and 1x DVI-I output. This breadth of interface support means you can integrate workstations with different GPU output types without purchasing separate signal converters — a meaningful cost and complexity reduction in mixed-hardware government IT environments.
• USB 2.0 Peripheral Sharing (8x Type-B Host, 3x Type-A Console): Eight USB 2.0 Type-B connectors on the host side and three USB 2.0 Type-A ports on the console allow keyboard, mouse, and CAC/smart card readers to be shared across hosts under strict NIAP-mandated isolation rules. USB traffic is hardware-filtered — no arbitrary USB device classes can tunnel data between hosts.
• Integrated Audio Switching (4x 3.5mm Host + 1x 3.5mm Console): Four 3.5mm stereo inputs on the host side and a single 3.5mm output at the console allow audio to follow the active host. Useful for voice communications and multimedia workflows that require synchronized audio without a secondary audio switch.
• All-Metal Chassis: The metal enclosure resists physical tampering and electromagnetic interference — both relevant in secure facility deployments where the switch itself is considered part of the physical security perimeter. At 4.2 lb (1.9 kg), it is desk- or rack-adjacent mountable without being unwieldy.
• Maximum Cable Length of 19.7 ft (6 m): The supported cable run of up to 6 meters provides enough reach to position the switch at a central console while host workstations sit in adjacent equipment racks or secured CPU enclosures — a common physical security architecture in sensitive compartmented information facilities (SCIFs).
• Operating Temperature 0°C to 40°C (32°F to 104°F): Standard office and data center thermal range. This is not an industrial-rated device — it is designed for conditioned, climate-controlled secure workspaces, which is consistent with its intended NIAP deployment context.
• 3-Year Manufacturer Warranty: A 3-year warranty on a piece of critical infrastructure in a classified environment matters — replacement cycles in secure facilities involve lengthy procurement and clearance processes. Knowing the hardware is warrantied for three years reduces unplanned refresh risk.

Integration and Compatibility

The CK4-HPD404C (often searched as CK4 HPD404C) connects to hosts via standard USB 2.0 Type-B and DisplayPort/HDMI/DVI-I cables, making it compatible with any modern Windows, Linux, or Mac workstation that exposes those interfaces. The console side accepts standard USB HID peripherals — keyboards, mice, and CAC readers — without requiring proprietary drivers in most configurations. The NIAP PSD 4.0 certification means this switch has passed independent laboratory validation of its isolation architecture, which is the key integration requirement for multi-domain workstations in U.S. federal environments.

For multi-domain network architectures, pair this switch with secure KVM cabling and peripheral kits rated for the same security profile. If you are planning a full secure operator workstation build, review the KVM switch selection guide for port count, video interface, and certification guidance before specifying. Also consider rackmount KVM console drawers if console integration into a rack enclosure is part of your facility design.

Frequently Asked Questions

Q: What does NIAP PSD 4.0 certification mean for the CK4-HPD404C?

A: NIAP PSD 4.0 is the current U.S. National Information Assurance Partnership Protection Profile for Peripheral Sharing Devices. It certifies that the switch enforces hardware-level isolation between connected hosts, preventing data from crossing between ports through the switch. This certification is required for use in U.S. federal, DoD, and intelligence community multi-domain workstation environments.

Q: How many monitors can be connected to the CK4-HPD404C console?

A: The CK4-HPD404C supports a quad-monitor console configuration — up to 4 simultaneous displays. The console side provides 2x DisplayPort, 1x HDMI, and 1x DVI-I video outputs to drive that setup.

Q: What video interfaces does the CK4-HPD404C support on the host side?

A: The host side provides 8x DisplayPort, 4x HDMI, and 4x DVI-I connectors across its four KVM ports. This allows connection to workstations with different GPU output types without requiring external signal converters.

Q: What is the maximum cable length supported by the CK4-HPD404C?

A: The CK4-HPD404C supports a maximum cable length of 19.7 feet (6 meters), providing enough reach to separate the console from host workstations in adjacent rack enclosures or secured CPU compartments.

Q: What is the warranty on the CK4-HPD404C?

A: The CK4-HPD404C carries a 3-year manufacturer warranty.

Q: Is the CK4-HPD404C suitable for non-government enterprise use?

A: Yes. While the NIAP PSD 4.0 certification is specifically required in U.S. government and classified environments, the hardware isolation architecture is equally applicable to regulated financial, legal, or healthcare enterprise deployments where strict workstation separation between network domains or data classifications is required by policy or compliance mandate.

James Everett

The CK4-HPD404C is one of the few KVM switches I would actually specify for a SCIF or multi-domain workstation environment without hesitation — and the reason is straightforward: it carries NIAP PSD 4.0 certification, which is not a marketing badge but an independently validated guarantee of hardware-level port isolation. If you are building a console for an operator who needs to access classified and unclassified networks simultaneously, this is the correct category of device, and this model has the paperwork to back it up.

Technical Highlights:

• NIAP PSD 4.0: Hardware isolation validated by independent NIAP-accredited lab — required for U.S. federal and DoD multi-domain deployments. Not software-enforced, not firmware-only: the isolation is architectural.
• Quad-Monitor, 4-Port Layout: All four displays remain active when switching hosts — no display blackout between workstations. The console interface provides 2x DisplayPort + 1x HDMI + 1x DVI-I, covering the most common monitor input combinations without adapters.
• Mixed Host Video Support (8x DP + 4x HDMI + 4x DVI-I): Avoids the common procurement headache of forcing all four host workstations to share a single video interface standard. In mixed hardware environments, this matters more than it looks on a spec sheet.

Deployment Considerations:

• The 6-meter (19.7 ft) maximum cable length is adequate for most console-to-rack architectures in secured rooms, but measure your run before ordering — exceeding the rated length will degrade signal integrity on the video interfaces, particularly at higher resolutions on DisplayPort.
• Operating temperature tops out at 40°C (104°F) — this is a conditioned-space device. Do not install it in an untreated equipment room or alongside heat-generating rack gear without verified airflow. It is not rated for industrial or uncontrolled thermal environments.

For a four-operator SOC or intelligence analysis workstation where each analyst controls a dedicated classified and unclassified machine pair across a quad-display console, the CK4-HPD404C is the correct specification — the NIAP PSD 4.0 certification satisfies the compliance requirement, and the mixed-interface host connectivity handles the hardware reality of most government IT shops.