Secure KVM Systems

Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0

Expert rating8.4 / 10

Port Count:: 4x2
Video Standard:: DisplayPort/HDMI
Max Resolution:: 4K@60Hz

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Manufacturer: Secure KVM Systems Last updated: 2026-09-12

Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0 Review

Secure SX42PH-4 4x2 mini matrix KVM DisplayPort HDMI 4K60 PP4.0 dual monitor classified secure video switching

The SX42PH-4 is a true mini-matrix, not a simple switch: any of 4 secure sources can be routed independently to either of 2 displays at full 4K60 over DisplayPort or HDMI, which is exactly what dual-monitor classified analysts need instead of a single shared output.

Matrix vs. Simple Switching

A 4x2 matrix means the two monitors on the desk don't have to mirror the same source, an analyst can have network A on the left screen and network B on the right, then independently retask either display to a different one of the four sources without disturbing the other.

4K60 Over DP/HDMI

Full 4K at 60Hz on both DisplayPort and HDMI inputs keeps high-resolution mapping and situational-awareness displays sharp, a step up from the 1080p/1920x1200 ceiling of older VGA/DVI secure KVMs like the Avocent SCKM140PP4-400.

Comparison to Alternatives

Step up to the SX82PH-4 for the same matrix concept across 8 sources, or to the SX42PHU-4 if filtered USB peripheral pass-through beyond keyboard/mouse is also needed. Against the Tripp Lite B002-DP1A4-N4, which is a straightforward 4-port DisplayPort switch to one display, the SX42PH-4's independent dual-output matrix is the meaningful upgrade for two-monitor desks.

Our verdict

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

Expert rating8.4 / 10

An excellent dual-monitor secure matrix for analysts who need independent, full-4K60 routing across four classified sources.

Best for

Dual-monitor analysts needing independent per-display source routing
Facilities standardizing on 4K60 DisplayPort/HDMI over legacy VGA
Watch floors running 4 classified sources across 2 screens

Not for

Single-monitor desks where a standard 4-port switch is simpler
Sites needing filtered USB pass-through (see SX42PHU-4)
8-source requirements better served by the SX82PH-4

Specifications

What these specs mean

Capability Score

8.2/10

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

Design

Port Count	4
Switching Method	Front-panel and remote pushbutton, independent per output

Topology

Displays Per Computer	2 displays
KVM Segment	Secure

Video & Features

Video Standard	DisplayPort/HDMI
Max Resolution	4K@60Hz
USB Hub Ports	2
Audio Support	No

Per display capability

Max Refresh At Max Resolution	60 Hz
Max Refresh At 4K	60 Hz

Display continuity

EDID Emulation	Yes

Switching control

Hotkey Switching	No

In the box and price

Price	1411.67 USD

FAQs

What are the key specifications of the Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0?

The Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0 is a KVM switch from Secure KVM Systems. Key specs: Port Count 4x2, Switching Method Front-panel and remote pushbutton, independent per output, Video Standard DisplayPort/HDMI, Max Resolution 4K@60Hz, USB Hub Ports 2.

Who is the Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0 best suited to?

Best suited to: Dual-monitor analysts needing independent per-display source routing; Facilities standardizing on 4K60 DisplayPort/HDMI over legacy VGA; Watch floors running 4 classified sources across 2 screens.

What are the drawbacks of the Secure 4x2 Mini-Matrix KVM DP/HDMI 4K60 PP4.0?

Not the best fit for: Single-monitor desks where a standard 4-port switch is simpler; Sites needing filtered USB pass-through (see SX42PHU-4); 8-source requirements better served by the SX82PH-4.