SmartAVI

SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM

Expert rating8.1 / 10

Port Count:: 4
Video Standard:: DisplayPort input / HDMI output
Max Resolution:: 4K@30Hz per head (x4)

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Manufacturer: SmartAVI Last updated: 2026-09-12

SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM (DP to HDMI) Review

SmartAVI SDHN-4Q-P 4 port quad head DisplayPort to HDMI secure KVM CAC classified four monitor

The SDHN-4Q-P tops out the DP-to-HDMI conversion line with quad-head switching, letting a four-monitor HDMI analyst workstation cover four classified networks fed by DisplayPort computers, CAC included, without an external converter breaking the security boundary.

Quad-Head Conversion for Fusion Cells

Like the SDVN-4Q-P and SDPN-4Q-P quad-head units, this model targets four-monitor analyst workstations, but specifically for facilities where the display fleet is HDMI while source computers output DisplayPort.

Priced Below the Native DisplayPort Quad-Head

At $1,462.92, the SDHN-4Q-P actually costs less than the native DisplayPort SDPN-4Q-P ($1,982.02), since it doesn't need to preserve full native DisplayPort resolution at the display end.

Comparison to Alternatives

Choose the SDPN-4Q-P instead if the facility's monitors are native DisplayPort; choose the SDVN-4Q-P for legacy DVI-I displays. The SDHN-4Q-P specifically fills the DP-source-to-HDMI-display gap at quad-head scale.

Specifications

Design

Port Count	4
Switching Method	Front-panel pushbutton

Topology

KVM Segment	Desk

Video & Features

Video Standard	DisplayPort input / HDMI output
Max Resolution	4K@30Hz per head (x4)
USB Hub Ports	3
Audio Support	No

In the box and price

Price	1462.92 USD

Security Certification	NIAP PP4.0 compliant design
Data Isolation	Isolated quad-head video buffers per channel
CAC/Smart Card Support	Yes, dedicated switched CAC/PIV reader port
Brand	SmartAVI
Model	SDHN-4Q-P
Spec Score	5.7
Monitors	4

Expert Review

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

Expert rating8.1 / 10

The right quad-head pick for four-monitor HDMI analyst workstations fed by DisplayPort source computers, with CAC support built in.

Best for

Four-monitor HDMI fusion-cell workstations fed by DisplayPort sources
Facilities needing quad-head conversion without external adapters
Command centers standardizing on CAC-equipped quad-monitor desks

Not for

Native DisplayPort monitor fleets (see SDPN-4Q-P)
Legacy DVI-I quad-head needs (see SDVN-4Q-P)
Two-monitor desks better served by the SDHN-2D-P/SDHN-4D-P

FAQs

What are the key specifications of the SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM (DP to HDMI)?

The SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM (DP to HDMI) is a KVM switch from SmartAVI. Key specs: Port Count 4, Switching Method Front-panel pushbutton, Video Standard DisplayPort input / HDMI output, Max Resolution 4K@30Hz per head (x4), USB Hub Ports 3.

Who is the SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM (DP to HDMI) best suited to?

It suits four-monitor hdmi fusion-cell workstations fed by displayport sources, facilities needing quad-head conversion without external adapters, command centers standardizing on cac-equipped quad-monitor desks.

What are the drawbacks of the SmartAVI SDHN-4Q-P 4-Port Quad-Head Secure KVM (DP to HDMI)?

It is a poor fit for native displayport monitor fleets (see sdpn-4q-p), legacy dvi-i quad-head needs (see sdvn-4q-p), two-monitor desks better served by the sdhn-2d-p/sdhn-4d-p.