SmartAVI

SmartAVI SM-DPN-4Q-S

Expert rating8 / 10

Port Count:: 4 computers, quad DisplayPort
Video Standard:: DisplayPort
Max Resolution:: 4K@60Hz
USB Hub Ports:: 4

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Manufacturer: SmartAVI Last updated: September 12, 2026

SmartAVI SM-DPN-4Q-S Review

The SmartAVI SM-DPN-4Q-S is a 4-port quad-DisplayPort KVM switch with 4K@60Hz output.

Same quad-monitor, four-computer concept as the SM-UHN-4Q-S in this catalog, but built for DisplayPort monitor banks instead of HDMI, and priced a bit lower here. DisplayPort's daisy-chain and higher-bandwidth heritage makes this the better pick for engineering and design workstations that already standardized on DP monitors rather than HDMI displays.

Native Quad-DisplayPort Switching

All four monitor feeds run over DisplayPort end to end, matching the connector standard most engineering and CAD monitor banks already use.

4K on Every Head

Each of the four monitors gets a full 4K@60Hz signal from its assigned computer rather than a compressed or downgraded feed.

Comparison to Alternatives

Versus the SmartAVI SM-UHN-4Q-S, that's the HDMI version of the same platform, worth it if the monitor bank uses HDMI instead of DP. Versus the SmartAVI SM-D2H-4Q-S, that's a mixed HDMI-output, 4-port model at a different price point, worth comparing if the exact output mix differs.

Our verdict

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

Expert rating8 / 10

The DisplayPort-native choice for a four-computer, four-monitor engineering or CAD workstation bank.

Best for

Engineering and CAD workstations standardized on DisplayPort monitors
Four-computer setups needing native 4K@60Hz DP switching
Buyers who want the lower-priced sibling of the HDMI SM-UHN-4Q-S

Not for

HDMI-only monitor banks (see the SM-UHN-4Q-S)
Small 2-monitor desks that don't need a quad-head switch
Legacy VGA or DVI installations

Specifications

What these specs mean

Capability Score

5.0/10

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

Design

Port Count	4
Switching Method	Button, hotkey, software

Topology

Displays Per Computer	4 displays
KVM Segment	Desk

Video & Features

Video Standard	DisplayPort
Max Resolution	4K@60Hz
USB Hub Ports	4
Audio Support	Yes

Per display capability

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

USB peripheral switching

USB Switching Speed	USB 2.0

Switching control

Hotkey Switching	Yes

In the box and price

Price	934.29 USD

FAQs

What are the key specifications of the SmartAVI SM-DPN-4Q-S (4-Port Quad DisplayPort KVM Switch)?

The SmartAVI SM-DPN-4Q-S (4-Port Quad DisplayPort KVM Switch) is a KVM switch from SmartAVI. Key specs: Port Count 4 computers, quad DisplayPort outputs, Switching Method Button, hotkey, software, Video Standard DisplayPort, Max Resolution 4K@60Hz, USB Hub Ports 4.

Who is the SmartAVI SM-DPN-4Q-S (4-Port Quad DisplayPort KVM Switch) best suited to?

Best suited to: Engineering and CAD workstations standardized on DisplayPort monitors; Four-computer setups needing native 4K@60Hz DP switching; Buyers who want the lower-priced sibling of the HDMI SM-UHN-4Q-S.

What are the drawbacks of the SmartAVI SM-DPN-4Q-S (4-Port Quad DisplayPort KVM Switch)?

Not the best fit for: HDMI-only monitor banks (see the SM-UHN-4Q-S); Small 2-monitor desks that don't need a quad-head switch; Legacy VGA or DVI installations.