SmartAVI SM-MST-4D
Expert rating5.8 / 10
- Port Count:
- 4
- Video Standard:
- DisplayPort MST (dual-head)
- Max Resolution:
- 4K@30Hz per head
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Manufacturer: SmartAVI Last updated: 2026-09-12
SmartAVI SM-MST-4D (4-Port Dual-Head Multi-Stream KVM Switch, Discontinued / $420.00) Review
SmartAVI SM-MST-4D discontinued 4-port dual-head multi-stream KVM switch clearance
The dual-head member of SmartAVI's discontinued MST switch line, offered at clearance pricing for buyers who don't mind an unsupported legacy design.
Legacy Dual-Head MST Design
Like its quad-head sibling, the SM-MST-4D relies on DisplayPort MST rather than SmartAVI's newer native multi-head switching, and has been discontinued in favor of the DPN/EDPN lines.
Comparison to Alternatives
SmartAVI's actively supported SM-DPN-4D-S covers the same dual-head, 4-port niche with manufacturer backing and should be the default choice; consider the MST-4D only for clearance-price backup or spare-parts purposes.
Specifications
Design
| Port Count | 4 |
|---|---|
| Switching Method | Front-panel pushbutton |
Video & Features
| Video Standard | DisplayPort Multi-Stream Transport (dual-head) |
|---|---|
| Max Resolution | 4K@30Hz per head |
| USB Hub Ports | 2 |
| Audio Support | No |
In the box and price
| Price | 420.00 USD |
|---|
| Product Status | Discontinued — while supplies last, no manufacturer support |
|---|---|
| Brand | SmartAVI |
| Model | SM-MST-4D |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating5.8 / 10
Discontinued and unsupported; the SM-DPN-4D-S is the actively supported equivalent at a similar price.
Best for
- Clearance-priced backup/spare unit needs
- Replacing a failed identical legacy unit
- Non-critical temporary deployments
Not for
- New long-term installations
- Mission-critical deployments
- Buyers wanting manufacturer support
FAQs
What are the key specifications of the SmartAVI SM-MST-4D (4-Port Dual-Head Multi-Stream KVM Switch, Discontinued / $420.00)?
The SmartAVI SM-MST-4D (4-Port Dual-Head Multi-Stream KVM Switch, Discontinued / $420.00) is a KVM switch from SmartAVI. Key specs: Port Count 4, Switching Method Front-panel pushbutton, Video Standard DisplayPort Multi-Stream Transport (dual-head), Max Resolution 4K@30Hz per head, USB Hub Ports 2.
Who is the SmartAVI SM-MST-4D (4-Port Dual-Head Multi-Stream KVM Switch, Discontinued / $420.00) best suited to?
It suits clearance-priced backup/spare unit needs, replacing a failed identical legacy unit, non-critical temporary deployments.
What are the drawbacks of the SmartAVI SM-MST-4D (4-Port Dual-Head Multi-Stream KVM Switch, Discontinued / $420.00)?
It is a poor fit for new long-term installations, mission-critical deployments, buyers wanting manufacturer support.
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