SmartAVI SM-MST-4Q
Expert rating6 / 10
- Port Count:
- 4
- Video Standard:
- DisplayPort MST (quad-head)
- Max Resolution:
- 4K@30Hz per head
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Manufacturer: SmartAVI Last updated: 2026-09-12
SmartAVI SM-MST-4Q (4-Port Quad-Head Multi-Stream KVM Switch, Discontinued / $778.44) Review
SmartAVI SM-MST-4Q discontinued 4-port quad-head multi-stream KVM switch clearance
A discontinued quad-head DisplayPort MST switch from SmartAVI's older lineup, available while supplies last at clearance pricing but no longer manufacturer-supported — buyers should confirm return policy before purchase.
Discontinued MST-Based Quad-Head Switch
The SM-MST-4Q used DisplayPort's Multi-Stream Transport to drive four monitors from a single DP output, an older approach SmartAVI has since replaced with its EDPN line's native multi-head architecture. It is no longer in production.
Comparison to Alternatives
Buyers considering the SM-MST-4Q should strongly weigh SmartAVI's actively supported SM-EDPN-4Q-S instead, which offers similar quad-head capability with manufacturer support and warranty. The MST-4Q is only worth considering at clearance pricing for non-critical or backup use.
Specifications
Design
| Port Count | 4 |
|---|---|
| Switching Method | Front-panel pushbutton |
Video & Features
| Video Standard | DisplayPort Multi-Stream Transport (quad-head) |
|---|---|
| Max Resolution | 4K@30Hz per head |
| USB Hub Ports | 2 |
| Audio Support | No |
In the box and price
| Price | 778.44 USD |
|---|
| Product Status | Discontinued — while supplies last, no manufacturer support |
|---|---|
| Brand | SmartAVI |
| Model | SM-MST-4Q |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating6 / 10
Discontinued and unsupported — acceptable only as a clearance-priced backup unit; the SM-EDPN-4Q-S is the supported alternative.
Best for
- Budget-conscious buyers accepting no manufacturer support
- Backup/spare quad-head switch needs
- Replacing a failed identical legacy unit
Not for
- Mission-critical deployments needing manufacturer support
- New long-term installations
- Buyers wanting a warranty
FAQs
What are the key specifications of the SmartAVI SM-MST-4Q (4-Port Quad-Head Multi-Stream KVM Switch, Discontinued / $778.44)?
The SmartAVI SM-MST-4Q (4-Port Quad-Head Multi-Stream KVM Switch, Discontinued / $778.44) is a KVM switch from SmartAVI. Key specs: Port Count 4, Switching Method Front-panel pushbutton, Video Standard DisplayPort Multi-Stream Transport (quad-head), Max Resolution 4K@30Hz per head, USB Hub Ports 2.
Who is the SmartAVI SM-MST-4Q (4-Port Quad-Head Multi-Stream KVM Switch, Discontinued / $778.44) best suited to?
It suits budget-conscious buyers accepting no manufacturer support, backup/spare quad-head switch needs, replacing a failed identical legacy unit.
What are the drawbacks of the SmartAVI SM-MST-4Q (4-Port Quad-Head Multi-Stream KVM Switch, Discontinued / $778.44)?
It is a poor fit for mission-critical deployments needing manufacturer support, new long-term installations, buyers wanting a warranty.
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