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Belkin Universal 2nd Gen Secure KVM Switch F1DN104KVM-UN-4 4 Port Single Head DP HDMI 4K 60Hz with CAC NIAP PSD 4.0 TAA

Brand:
BELKIN
Belkin Universal Secure SingleHead KVM audio F1DN104KVMUN4
Belkin Universal 2nd Gen Secure KVM Switch F1DN104KVM-UN-4 4 Port Single Head DP HDMI 4K 60Hz with CAC NIAP PSD 4.0 TAA
€1354.46 inc. VAT
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F1DN104KVM-UN-4
€1,138.20
€1,354.46 inc. VAT
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Product Code
CA90192
EAN Code
0745883785841
Manufacturer
BELKIN

Quick Specs

Computers / Displays
4 computers, 1 display
Video
DisplayPort and HDMI, up to 4K at 60 Hz
Certification
NIAP PSD 4.0, TAA compliant
CAC Reader
Yes — dedicated port with CAC freeze
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Belkin Universal 2nd Gen Secure KVM — 4 Port, Single Head, with CAC

4 computers1 displayDP + HDMI 4K 60HzNIAP PSD 4.0CAC reader port

The Belkin F1DN104KVM-UN-4 is a NIAP-certified secure KVM switch: it lets one keyboard, mouse, display and headset drive 4 separate computers, while physically preventing data from ever crossing between them. That is the whole point of a secure KVM — it is not a convenience switch, it is an isolation device for desks that touch networks of different classifications.

Isolation is enforced in hardware, not software. Optical data diodes force USB traffic one way only, the video path is kept separate from everything else, each port has its own processor and power domain, and the firmware physically cannot be read back or rewritten. There is no configuration that can accidentally weaken it.

Compatibility — check before buying:
Console side takes a USB Type-A keyboard and USB Type-A mouse — standard HID only. Wireless keyboards and mice are prohibited by design, and USB storage or composite devices are rejected outright. Video is a DisplayPort / HDMI combo connector on the console and on every computer port: DP 1.2 and HDMI 2.0 are auto-detected and converted internally, up to 3840 x 2160 at 60 Hz. DVI-D works through the recommended cables; there is no native VGA. Audio is a 3.5 mm output only, with ultrasonic filtering — there is deliberately no microphone input. A dedicated CAC / smart-card reader port is provided on the console with its own status LED, plus a USB Type-B CAC port per computer, an administrator-programmable device whitelist and CAC freeze.

Best For

✓Desks that must reach two or more networks of different classification from one set of peripherals
✓Government, defence and critical-infrastructure environments with a NIAP or Common Criteria requirement
✓Security operations centres and control rooms where an ordinary KVM would be an unacceptable data path

Key Features

 
Hardware isolation, not software
Optical data diodes give unidirectional, HID-filtered USB flow with more than 60 dB of channel isolation. The video path is kept separate from all other traffic and each port sits in its own power domain to block signalling attacks.
 
Always-on anti-tamper
Holographic tamper-evident labels plus an active anti-tamper system that stays armed in transit and after deployment. Belkin is explicit: any attempt to open the enclosure triggers it, renders the unit inoperable and voids the warranty.
 
Firmware that cannot be rewritten
All microcontrollers are protected against firmware read, modification and rewrite. There is no update path, which is the point — nothing can be flashed onto it in the field.
 
CAC / smart-card support with freeze
A dedicated console port for a CAC or smart-card reader, an admin-programmable whitelist of permitted readers, and CAC freeze so the reader can stay bound to one channel while you view another.

Technical Specifications

Switching
Belkin Part Number F1DN104KVM-UN-4
Official Name Universal 2nd Gen Secure KVM Switch, 4-Port Single Head with CAC
Computers Supported 4
Displays (Heads) 1
Local Users 1
Form Factor Desktop; under-counter mountable
Video
Console Connector DisplayPort / HDMI combo
Computer Connectors DisplayPort / HDMI combo, one per port
Standards DisplayPort 1.2, HDMI 2.0, auto-detected with internal conversion
Maximum Resolution 3840 x 2160 at 60 Hz
DVI-D Supported via recommended cables
VGA Not supported natively
EDID Secure EDID emulation performed at power-up; all EDID and MCCS writes blocked; DisplayPort AUX channel filtered
Peripherals & Audio
Keyboard USB Type-A, HID only
Mouse USB Type-A, HID only
Wireless Keyboard / Mouse Prohibited by design
USB Storage Rejected
Computer Port USB Type-B per computer
Audio Output 3.5 mm analogue on console and per computer, 8th-order elliptic ultrasonic filtering
Microphone Input None — deliberately omitted
CAC / Smart Card Dedicated console reader port with status LED, USB Type-B CAC port per computer, admin-programmable whitelist, CAC freeze
Security & Certification
Protection Profile NIAP PSD v4.0 PP-Configuration
Modules Claimed PSD 4.0 plus Keyboard/Mouse, Video/Display, Analogue Audio Output and User Authentication
Certificate on Record Common Criteria 532-EWA, certified 29 April 2021, firmware 44444-E7E7
Certification Note We could not surface a post-2021 recertification for the CAC models. If you are buying against a live NIAP requirement, confirm the current certificate status with Belkin before ordering — we would rather tell you that than let you assume.
Tamper Protection Holographic tamper-evident labels; always-on active anti-tamper that disables the unit if the enclosure is opened
Data Path Optical data diodes, unidirectional HID-filtered USB, more than 60 dB channel isolation, isolated video path, per-port power-domain isolation
Firmware Non-reprogrammable; protected against read, modification and rewrite
TAA Compliance Yes
Power & In the Box
Power Supply 12 V / 2.5 A universal, worldwide adaptors
Included Switch, power supply with worldwide adaptors, port naming labels, quick start guide and compliance documents
Not Included KVM cables are not supplied
Optional F1DN008KBD secure keyboard / remote port selector; F1D9013b CAC cable
Warranty
Warranty 1-Year Warranty (Singular)
Manufacturer Term Belkin publishes a 3-year limited warranty on the Secure KVM range, upgradeable to 4 or 5 years. Opening the enclosure voids it.

Frequently Asked Questions

What does the -UNN4 / -UN-4 suffix actually mean?
It is the CAC question and nothing else. -UN-4 has a CAC / smart-card reader port; -UNN4 does not. It is not a TAA difference and not a different Protection Profile — both are TAA compliant and both are certified against NIAP PSD 4.0. Belkin’s own datasheet, quick installation guide, product-page names and Security Targets all agree on this.
Are KVM cables included?
No. The box has the switch, the power supply, port labels and documentation. KVM cables are ordered separately, which is normal for this range because the cable set depends on what your machines expose.
Can I use my wireless keyboard and mouse?
No. Wireless keyboards and mice are prohibited by design on a secure KVM, and the switch only accepts standard USB HID keyboards and mice. USB storage and composite devices are rejected outright.
Is it TAA compliant?
Yes. Belkin documents the whole Universal 2nd Gen range as TAA compliant. Note that some distributor feeds mark only part of the range as TAA — that is a feed error, not a real difference between the SKUs.
Can I open it to service it?
No, and you should not try. The anti-tamper system is always armed, including in transit. Opening the enclosure disables the unit permanently and voids the warranty. That is a security feature, not a design flaw.
What resolution does it support?
Up to 3840 x 2160 at 60 Hz over DisplayPort 1.2 or HDMI 2.0. Do not confuse this with Belkin’s Modular secure KVM range, which tops out at 4K 30 Hz.
Singular Expert Insight
Two things decide which SKU you want. First, CAC: if anyone at the desk authenticates with a smart card, you need the -UN-4 version, and retrofitting is not possible. Second, heads: a dual-head unit switches two displays as one desktop, and buying single-head to save money means re-cabling later. Everything else in this range — certification, isolation, TAA status, resolution — is identical across the SKUs, so those two choices are the whole decision.

Buyer's Guide

Buy it if

Buy this if you need one desk to reach 4 isolated machines with hardware-enforced separation and a NIAP PSD 4.0 certificate, including smart-card authentication.

Skip it if

Skip it if you just want to share peripherals between two PCs — an ordinary KVM is a fraction of the price.

Also consider

Also worth a look: the matching F1DN104KVM-UNN4 without CAC, the dual-head and higher port-count models in the same range, and our wider networking and desktop hardware lineup.

Features - BELKIN - F1DN104KVM-UN-4

Colour
black
More Details
Product Code
CA90192
EAN Code
0745883785841
Manufacturer
BELKIN
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