Raritan

Raritan SS4-104-DUAL

Expert rating8.7 / 10

Port Count:: 4 (secure dual monitor)
Video Standard:: DisplayPort / HDMI / VGA (selectable, dual-head)
Max Resolution:: 1920x1200@60Hz per head

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Manufacturer: Raritan Last updated: September 12, 2026

Raritan SS4-104-DUAL Review

The Raritan SS4-104-DUAL is a 4-port secure dual-monitor KVM switch built to NIAP PP4.0 requirements, with selectable DisplayPort/HDMI/VGA video on two isolated heads per channel and front-panel-only pushbutton switching.

The SS4-104-DUAL takes the same NIAP PP4.0 isolation model as the RSS4-104 and extends it to two monitors per connected computer, which is the more realistic setup for classified analyst workstations where a second screen for reference material or a secondary application is standard practice. Both video buffers per channel remain fully isolated, so the security posture doesn't weaken just because a second head was added. Versus the Raritan RSS4-104, the single-head sibling, meaningfully cheaper if only one monitor is needed. Versus the ATEN CS1188DP4, an 8-port secure DisplayPort alternative for larger single-head deployments rather than dual-monitor ones.

Dual-Head Isolation Without Compromise

The SS4-104-DUAL takes the same NIAP PP4.0 isolation model as the RSS4-104 and extends it to two monitors per connected computer, with both video buffers per channel remaining fully isolated.

Built for Analyst-Style Secure Workstations

This is the more realistic setup for classified analyst workstations where a second screen for reference material or a secondary application is standard practice.

Comparison to Alternatives

Versus the Raritan RSS4-104, the single-head sibling, meaningfully cheaper if only one monitor is needed. Versus the ATEN CS1188DP4, an 8-port secure DisplayPort alternative for larger single-head deployments rather than dual-monitor ones.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.7 / 10

The dual-monitor answer for secure analyst workstations, with the same rigorous per-channel isolation as Raritan's single-head model.

Best for

Classified analyst workstations needing two isolated monitors per source
Government facilities requiring NIAP PP4.0 dual-head secure switching
Multi-domain setups where a single monitor is genuinely insufficient

Not for

Single-monitor secure desks (the RSS4-104 is cheaper)
Commercial desks with no certification requirement
Deployments needing more than 4 secure ports

Specifications

What these specs mean

Capability Score

7.3/10

How much this switch can do compared with other secure KVM switches, rated from its certification and specifications.

Identity

Brand	Raritan
Model Number	SS4-104-DUAL
Switching Method	Front-panel pushbutton only (no hotkey)

Topology

Computers Supported	4 computers
KVM Segment	Secure

Video & Features

Video Standard	DisplayPort / HDMI / VGA (selectable, dual-head)
Max Resolution	1920x1200@60Hz per head
USB Hub Ports	0
Audio Support	No

Per display capability

Max Resolution Single Display	1920x1200
Max Refresh At Max Resolution	60 Hz

In the box and price

Price	1328.19 USD

FAQs

What are the key specifications of the Raritan SS4-104-DUAL (4-Port Secure Dual-Monitor KVM Switch / NIAP PP4.0)?

Key specs for the Raritan SS4-104-DUAL: USB Hub Ports 0 (isolated keyboard/mouse only), Max Resolution 1920x1200@60Hz per head, Max Refresh At Max Resolution 60 Hz, Max Resolution Per Display 1920x1200, Audio Support No, Port Count 4 (secure dual monitor).

Who is the Raritan SS4-104-DUAL (4-Port Secure Dual-Monitor KVM Switch / NIAP PP4.0) best suited to?

Best suited to: Classified analyst workstations needing two isolated monitors per source; Government facilities requiring NIAP PP4.0 dual-head secure switching; Multi-domain setups where a single monitor is genuinely insufficient.

What are the drawbacks of the Raritan SS4-104-DUAL (4-Port Secure Dual-Monitor KVM Switch / NIAP PP4.0)?

Not the best fit for: Single-monitor secure desks (the RSS4-104 is cheaper); Commercial desks with no certification requirement; Deployments needing more than 4 secure ports.