StarTech CK4-P202C Secure 2-Port Dual-Monitor DisplayPort KVM Switch

Overview

The StarTech CK4-P202C is a NIAP Protection Profile 4.0-certified secure KVM switch built for classified and high-security environments where two operators or workstations need to share a dual-monitor DisplayPort setup without any risk of data bleed between connected systems. This is not a convenience switcher — the CK4-P202C is a purpose-built peripheral sharing device (PSD) that satisfies the U.S. government's most current security certification for KVM switches, making it the correct choice for SCIFs, defense contractors, federal agencies, and any deployment where NIAP PP PSD v4.0 compliance is a procurement requirement. The metal enclosure measures 8.8 × 6.7 × 2.6 in and weighs 3.9 lb — solid enough to stay planted on a desk without a security tether, though mounting options should be confirmed for your specific rack or furniture situation.

For buyers evaluating StarTech KVM and connectivity solutions, the CK4-P202C sits at the top of the secure KVM line — it is not a general-purpose office switcher, and the NIAP 4.0 certification comes with real hardware and firmware constraints that distinguish it from commodity DisplayPort KVMs.

Key Features

• NIAP PP PSD Version 4.0 Certification: This is the current baseline certification standard for secure peripheral sharing devices in U.S. government procurement. NIAP 4.0 imposes strict hardware isolation between ports — electrical and optical isolation prevents any data path between connected computers, eliminating covert channel attacks. If your program office or security officer requires NIAP PSD 4.0, this certification is non-negotiable and the CK4-P202C meets it directly.
• Dual-Monitor DisplayPort at 4K 30Hz: Each of the two host computers drives two DisplayPort outputs simultaneously — four total video connections on the host side (4 × 20-pin DisplayPort Female connectors). Your console side sees two DisplayPort outputs, supporting 4K resolution at 30Hz. This is practical for CAD, GIS, or multi-application classified workstations where a single monitor isn't sufficient. If you need 4K 60Hz, evaluate this spec against your display requirements before purchasing.
• USB 2.0 Peripheral Sharing — Three Console Ports: The console side provides three USB 2.0 Type-A ports for keyboard, mouse, and one additional USB peripheral. On the host side, four USB 2.0 Type-B connectors connect to the two computers. USB 2.0 bandwidth is sufficient for HID devices but won't pass USB storage or high-bandwidth peripherals — which is intentional in a NIAP-certified device where uncontrolled data transfer paths would be a security violation.
• Audio Switching: One 3.5mm stereo audio output on the console side and two 3.5mm stereo inputs on the host side allow audio to follow the active computer. Useful for voice communications and classified audio in dual-network workstation environments. Audio path isolation is part of the NIAP PSD scope.
• Maximum Cable Runs to 19.7 ft (6m): Supports cable distances up to 6 meters between the KVM and connected computers. In a typical classified workspace with desktop towers in a locked cage or adjacent credenza, 6m is generally sufficient — but map your physical layout before ordering.
• Metal Enclosure, Commercial-Grade Construction: The all-metal chassis is a deliberate design choice for a NIAP device — tamper evidence and physical integrity matter in secure deployments. The black metal housing is compact enough for desktop placement but substantial enough to resist casual tampering.
• Operational Temperature Range 0°C to 40°C: Rated for standard office and classified facility environments. Not rated for extended industrial temperature ranges, so avoid deploying in uncontrolled mechanical rooms or outdoor enclosures without supplemental climate control.
• 3-Year Manufacturer Warranty: A 3-year warranty on a NIAP-certified device is appropriate given the procurement lifecycle for secure government workstations — replacement cycles in classified environments often extend 3–5 years, and the warranty covers that initial period.

Integration and Compatibility

The CK4-P202C is designed for secure KVM switch deployments running two independent networks or classification levels at a single workstation. It is compatible with any system presenting standard USB HID (keyboard/mouse) and DisplayPort video — Windows, Linux, and other OS environments are supported at the hardware level since the KVM presents standard HID descriptors. No drivers are required for basic KVM switching operation.

USB peripheral compatibility is intentionally constrained by NIAP PSD 4.0 requirements — only HID-class devices (keyboards, mice, CAC readers where supported) pass through cleanly. USB mass storage devices will not enumerate, which is a security feature, not a limitation to work around. If you need to pass a CAC or smart card reader, verify the specific reader model is HID-compliant before deploying. For environments requiring KVM cabling up to the full 6m run, use high-quality DisplayPort cables rated for the distance to avoid signal degradation at 4K.

If your facility is evaluating broader secure KVM solutions across multiple workstations or needs a 4-port variant, compare within the StarTech secure KVM family before committing — the CK4-P202C is specifically a 2-port, 2-monitor configuration. Facilities deploying multi-user classified environments may also want to review KVM accessories and labeling hardware for cable management in cramped secure spaces.

Frequently Asked Questions

Q: Is the CK4-P202C NIAP certified, and which protection profile does it meet?

A: Yes. The CK4-P202C is certified to NIAP Protection Profile for Peripheral Sharing Devices (PSD), Version 4.0 — the current U.S. government standard for secure KVM switches. This is the highest current PSD protection profile and is required for many federal and defense deployments.

Q: How many monitors and computers does the CK4-P202C support?

A: The CK4-P202C supports 2 computers (KVM ports) and 2 monitors simultaneously. Each connected computer has two DisplayPort connections to the switch (4 host-side DisplayPort Female connectors total), and the console outputs two DisplayPort signals to your dual monitors.

Q: What is the maximum video resolution supported?

A: The CK4-P202C supports DisplayPort video at up to 4K resolution at 30Hz. If your workflow requires 4K at 60Hz, evaluate this spec against your display and application requirements before purchasing.

Q: Can I connect USB storage devices through the CK4-P202C?

A: No. The NIAP PSD 4.0 certification intentionally restricts USB data paths to HID-class devices only (keyboard, mouse, and compliant HID peripherals). USB mass storage will not enumerate — this is a security design requirement of the NIAP standard, not a defect.

Q: What is the warranty on the CK4-P202C?

A: The CK4-P202C carries a 3-year manufacturer warranty.

Q: What is the maximum cable length supported between the KVM and connected computers?

A: The CK4-P202C supports a maximum cable length of 19.7 ft (6 meters) between the switch and connected host computers. Plan your physical workspace layout to confirm this distance is sufficient before installation.

Eden Phillips

The CK4-P202C (often searched as CK4 P202C) is one of a short list of desktop KVM switches that actually clears the NIAP PP PSD Version 4.0 bar — and that certification matters enormously in the procurement context where this device lives. When a program security officer or contracting officer requires NIAP PSD 4.0, the certified product list is not long, and the CK4-P202C's dual-monitor DisplayPort capability at 4K 30Hz puts it in a practical position for classified analyst workstations running two independent networks side by side.

Technical Highlights:

• NIAP PSD 4.0 Hardware Isolation: The certification requires verifiable electrical and optical isolation between host ports — not software-level switching, which can be defeated. This is the architectural difference between a secure KVM and a commodity switcher, and it's why NIAP-listed devices cost significantly more.
• Four Host-Side DisplayPort Connectors: Two DisplayPort lines per computer (four total 20-pin Female connectors on the host side) means each computer drives both monitors independently. Switching hands over both video outputs simultaneously — no partial-screen artifacts or monitor mismatch between computers.
• Constrained USB 2.0 HID Path: Three console USB 2.0 Type-A ports cover keyboard, mouse, and one additional HID device. The four USB 2.0 Type-B host connectors carry only HID-class traffic by design. This constraint is not configurable — it is built into the NIAP compliance architecture and cannot be bypassed.

Deployment Considerations:

• Map your cable runs before deployment: the 6-meter maximum between KVM and host computers is usually adequate for a single workstation area, but in installations where the locked computer cabinet is across the room from the operator desk, you may hit the limit. Measure first.
• The 4K 30Hz ceiling is worth checking against your specific display and application stack. GIS, video review, or certain CAD applications may have a noticeable difference at 30Hz versus 60Hz — confirm with end users before finalizing the order if high-refresh-rate workflows are involved.

For a classified dual-network analyst workstation in a SCIF or defense contractor facility where NIAP PSD 4.0 is a stated requirement and the operator runs dual DisplayPort monitors, the CK4-P202C is a direct fit — not a workaround.