Avocent (Vertiv)

Avocent SV340 4-Port Desktop KVM Switch

Expert rating8 / 10

Port Count:: 4 computers
Video Standard:: DisplayPort
Max Resolution:: 4K@30Hz
USB Hub Ports:: 1

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Manufacturer: Avocent (Vertiv) Last updated: September 12, 2026

Avocent SV340 4-Port Desktop KVM Switch ($1099.76) Review

The Avocent SV340 is a 4-port desktop secure KVM switch with certified DisplayPort isolation and 4K@30Hz video, priced at $1099.76.

This sits in Vertiv's Cybex SV secure line above the 2-port SV220 in this catalog, four computers instead of two, with 4K support the SV220 doesn't have, aimed at analyst desks that need both certified isolation and modern resolution rather than the older 1920x1200 ceiling. It's priced above the general-purpose Avocent SC740, reflecting the SV series' desktop-focused compact chassis versus the SC700 line's broader deployment options.

Certified Isolation Meets 4K

Unlike the smaller SV220, the SV340 supports 4K@30Hz, letting secure desks run modern high-resolution monitors without giving up certified channel isolation.

Compact Desktop Form Factor

Built for a single analyst's desk rather than a rack, the SV340 packs four certified-isolated computer inputs into a compact desktop chassis.

Comparison to Alternatives

Versus the Avocent Cybex SV220 — that's a 2-computer, 1920x1200 unit at a lower price, worth it for a simpler two-network desk. Versus the Avocent SC740 — that's also a 4-computer secure switch but tops out below 4K, worth it only where modern resolution isn't a requirement.

Specifications

Design

Port Count	4
Switching Method	Button, hotkey

Video & Features

Video Standard	DisplayPort
Max Resolution	4K@30Hz
USB Hub Ports	1
Audio Support	No

In the box and price

Price	1099.76 USD

Brand	Avocent (Cybex)
Model	SV340
Security	NIAP-certified isolated switching

Expert Review

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

Expert rating8 / 10

A strong pick for a secure analyst desk that needs both certified isolation and 4K resolution across 4 computers.

Best for

Secure analyst desks needing 4K resolution with certified isolation
Government/defense environments upgrading from older 1920x1200 secure KVMs
Desktop deployments needing 4 certified-isolated computer channels

Not for

Two-computer desks (the SV220 is more cost-effective)
Non-secure environments where certification adds unneeded cost
Rack-mounted deployments needing higher port counts

FAQs

What are the key specifications of the Avocent SV340 4-Port Desktop KVM Switch ($1099.76)?

The Avocent SV340 4-Port Desktop KVM Switch ($1099.76) is a KVM switch from Avocent (Vertiv). Key specs: Port Count 4 computers, Switching Method Button, hotkey, Video Standard DisplayPort, Max Resolution 4K@30Hz, USB Hub Ports 1.

Who is the Avocent SV340 4-Port Desktop KVM Switch ($1099.76) best suited to?

It suits secure analyst desks needing 4k resolution with certified isolation, government/defense environments upgrading from older 1920x1200 secure kvms, desktop deployments needing 4 certified-isolated computer channels.

What are the drawbacks of the Avocent SV340 4-Port Desktop KVM Switch ($1099.76)?

It is a poor fit for two-computer desks (the sv220 is more cost-effective), non-secure environments where certification adds unneeded cost, rack-mounted deployments needing higher port counts.