SmartAVI

SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM

Expert rating7.9 / 10

Port Count:: 4
Video Standard:: DisplayPort
Max Resolution:: 4K@30Hz per head

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Manufacturer: SmartAVI Last updated: 2026-09-12

SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM (DisplayPort) Review

SmartAVI SDPN-4D 4 port dual head secure KVM DisplayPort four computer classified dual monitor

The SDPN-4D extends native DisplayPort dual-head switching to four computers, giving a two-monitor analyst desk on modern displays the same four-network coverage the DVI-I SDVN-4D offers legacy fleets.

Four Systems on Native DisplayPort

Both connected DisplayPort monitors switch together across four isolated computers, keeping the desk's two-screen layout intact as the operator moves between classified networks.

Resolution Headroom Over DVI-I

4K per head gives this unit meaningfully more resolution than the 1920x1200 ceiling of the DVI-I SDVN-4D, which matters for analysts working with high-resolution mapping or imagery tools.

Comparison to Alternatives

Against the DVI-I SDVN-4D, the SDPN-4D costs more but delivers native DisplayPort resolution. For CAC-equipped 4-port DisplayPort desks, see the SDPN-4D-P; for four-monitor coverage, the SDPN-4Q-P is the quad-head sibling.

Specifications

Design

Port Count	4
Switching Method	Front-panel pushbutton

Topology

KVM Segment	Desk

Video & Features

Video Standard	DisplayPort
Max Resolution	4K@30Hz per head
USB Hub Ports	2
Audio Support	No

In the box and price

Price	883.15 USD

Security Certification	NIAP PP4.0 compliant design
Data Isolation	Isolated dual-head video buffers per channel
Optical Isolation	Unidirectional data diodes
Brand	SmartAVI
Model	SDPN-4D
Spec Score	4.6
Monitors	2

Expert Review

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

Expert rating7.9 / 10

A strong 4-system dual-head DisplayPort choice for classified desks that have already standardized on modern displays.

Best for

4-system dual-monitor desks on native DisplayPort displays
Facilities needing higher resolution than legacy DVI-I supports
Analysts working high-resolution imagery across four networks

Not for

Sites needing CAC/smart-card switching (see SDPN-4D-P)
Legacy DVI-I fleets (see SDVN-4D)
Four-monitor desks better served by the SDPN-4Q-P

FAQs

What are the key specifications of the SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM (DisplayPort)?

The SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM (DisplayPort) is a KVM switch from SmartAVI. Key specs: Port Count 4, Switching Method Front-panel pushbutton, Video Standard DisplayPort, Max Resolution 4K@30Hz per head, USB Hub Ports 2.

Who is the SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM (DisplayPort) best suited to?

It suits 4-system dual-monitor desks on native displayport displays, facilities needing higher resolution than legacy dvi-i supports, analysts working high-resolution imagery across four networks.

What are the drawbacks of the SmartAVI SDPN-4D 4-Port Dual-Head Secure KVM (DisplayPort)?

It is a poor fit for sites needing cac/smart-card switching (see sdpn-4d-p), legacy dvi-i fleets (see sdvn-4d), four-monitor desks better served by the sdpn-4q-p.