SmartAVI

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

Expert rating7.6 / 10

Port Count:: 4
Video Standard:: DVI-I
Max Resolution:: 1920x1200 per head

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Manufacturer: SmartAVI Last updated: 2026-09-12

SmartAVI SDVN-4D 4-Port Dual-Head Secure KVM Review

SmartAVI SDVN-4D 4 port dual head secure KVM DVI-I four computer classified dual monitor

The SDVN-4D scales SmartAVI's dual-head DVI-I switching to four computers, giving a two-monitor analyst desk the ability to flip its whole workspace across four isolated classified networks with one button press per network.

Four Networks, Two Monitors, One Switch

Both connected DVI-I displays switch together, so moving from network 1 to network 3 changes the entire two-screen workspace in one action rather than requiring separate single-head switches per monitor.

DVI-I Legacy Compatibility

As with the 2-port SDVN-2D, DVI-I keeps the SDVN-4D compatible with older analog/digital dual-monitor fleets common in facilities mid-migration to newer video standards.

Comparison to Alternatives

The Belkin Advanced Secure KVM can be configured for similar port counts but at a materially higher price for comparable DVI dual-head configurations. Within the SmartAVI line, add CAC support with the SDVN-4D-P, or move to quad-head with the SDVN-4Q-P for four-monitor desks.

Our verdict

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

Expert rating7.6 / 10

A dependable 4-system dual-head secure switch for DVI-I desks that don't yet need CAC or quad-monitor support.

Best for

4-system dual-monitor classified desks on DVI-I displays
Facilities scaling up from 2-port to 4-port dual-head switching
Budget-conscious buys without CAC requirements

Not for

Sites needing CAC/smart-card switching (see SDVN-4D-P)
Four-monitor desks (see the quad-head SDVN-4Q-P)
DisplayPort-native environments (see SDPN-4D)

Specifications

What these specs mean

Capability Score

5.9/10

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 pushbutton

Topology

KVM Segment	Secure

Video & Features

Video Standard	DVI-I
Max Resolution	1920x1200 per head
USB Hub Ports	2
Audio Support	No

In the box and price

Price	729.00 USD

FAQs

What are the key specifications of the SmartAVI SDVN-4D 4-Port Dual-Head Secure KVM (DVI-I)?

The SmartAVI SDVN-4D 4-Port Dual-Head Secure KVM (DVI-I) is a KVM switch from SmartAVI. Key specs: Port Count 4, Switching Method Front-panel pushbutton, Video Standard DVI-I, Max Resolution 1920x1200 per head, USB Hub Ports 2.

Who is the SmartAVI SDVN-4D 4-Port Dual-Head Secure KVM (DVI-I) best suited to?

Best suited to: 4-system dual-monitor classified desks on DVI-I displays; Facilities scaling up from 2-port to 4-port dual-head switching; Budget-conscious buys without CAC requirements.

What are the drawbacks of the SmartAVI SDVN-4D 4-Port Dual-Head Secure KVM (DVI-I)?

Not the best fit for: Sites needing CAC/smart-card switching (see SDVN-4D-P); Four-monitor desks (see the quad-head SDVN-4Q-P); DisplayPort-native environments (see SDPN-4D).