Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC
- Computers:
- 4
- Monitors:
- 1
- Video Standard:
- Mixed (HDMI/DisplayPort)
- Max Resolution:
- 4K
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Manufacturer: Belkin Last updated: 2026-09-15
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Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC (F1DN104KVM-UN-4 / $1,282.99) Review
The Belkin F1DN104KVM-UN-4 is a 4-port single-head secure KVM switch with a CAC reader, built to NIAP Protection Profile standards.
This is a government/enterprise-grade secure KVM, not a consumer switch: it isolates each of 4 computers behind optical data diodes and a dedicated per-port processor, with a CAC reader for smart-card authentication built in. If you need NIAP-certified switching for classified or regulated environments, this is the single-head option in Belkin's current secure lineup.
Secure, Single-Head Switching
The F1DN104KVM-UN-4 handles 4 computers into one monitor via an auto-sensing HDMI/DisplayPort combo port, topping out at 4K resolution. Switching is entirely pushbutton, each port runs its own dedicated processor, and optical data diodes enforce one-way data flow between ports as a hardware-level security measure.
Built-In CAC Support
Unlike Belkin's non-CAC 'UNN4' variants, this model includes an integrated Common Access Card reader alongside 11 USB ports and 4 PS/2 ports for legacy peripherals, aimed at secure desktop environments that require smart-card login across multiple isolated machines.
Specifications
Design
| Switching Method | Front-panel pushbuttons, dedicated processor per port |
|---|
Topology
| KVM Segment | Desk |
|---|
Video & Features
| Video Standard | Mixed |
|---|---|
| Max Resolution | 4K (3840x2160) |
| USB Hub Ports | 11 |
Display continuity
| EDID Emulation | Yes |
|---|
In the box and price
| Price | 1282.99 USD |
|---|
| Computers | 4 |
|---|---|
| Monitors | 1 |
| Video Version | Auto-sensing HDMI / DisplayPort combo port |
| Max Refresh Rate | 60 Hz |
| Power | External DC power adapter, 100-240V AC auto-ranging |
| Firmware Updatable | No (NIAP-listed secure KVMs are field non-upgradable by design) |
| Spec Score | 5.8 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Secure/classified environments needing NIAP-certified 4-PC switching
- Desks requiring CAC authentication with a single display
Not for
- Home or small-office desks (this is priced and certified for secure environments)
- Anyone needing dual-monitor output
FAQs
What are the key specifications of the Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC (F1DN104KVM-UN-4 / $1,282.99)?
The Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC (F1DN104KVM-UN-4 / $1,282.99) is a KVM switch from Belkin. Key specs: Computers 4, Monitors 1, Video Standard Mixed, Video Version Auto-sensing HDMI / DisplayPort combo port, Max Resolution 4K (3840x2160).
Who is the Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC (F1DN104KVM-UN-4 / $1,282.99) best suited to?
It suits secure/classified environments needing niap-certified 4-pc switching, desks requiring cac authentication with a single display.
What are the drawbacks of the Belkin Universal 2nd Gen Secure KVM Switch, 4-Port Single Head w/ CAC (F1DN104KVM-UN-4 / $1,282.99)?
It is a poor fit for home or small-office desks (this is priced and certified for secure environments), anyone needing dual-monitor output.
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