ATEN CS1142DP4
Expert rating8.5 / 10
- Port Count:
- 2 (secure)
- Video Standard:
- DisplayPort
- Max Resolution:
- 3840x2160@30Hz
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Manufacturer: ATEN Last updated: September 12, 2026
ATEN CS1142DP4 (2-Port 4K Secure DisplayPort KVM Switch / NIAP PP4.0 / $592.08) Review
The ATEN CS1142DP4 is a 2-port secure DisplayPort KVM switch built to next-generation NIAP PP4.0 requirements, supporting 4K@30Hz resolution with fully isolated per-channel video buffers and pushbutton-only switching, priced at $592.08.
The CS1142DP4 belongs to ATEN's newer CS114xDP4 secure family, which trades some of the CS118xDP4 line's port scaling for higher resolution: 4K@30Hz instead of 1920x1200, useful for classified workstations that have moved to higher-resolution displays for dense dashboards or CAD-style work. It keeps the same security-first restrictions — no hotkeys, no general hub. Versus the ATEN CS1182DP4 — the older, cheaper 1080p-class secure switch, adequate if 4K isn't needed. Versus the ATEN CS1144DP4 — same 4K-capable generation, doubling the port count to 4.
4K Resolution in a Secure Switch
The CS1142DP4 belongs to ATEN's newer CS114xDP4 secure family, which trades some of the CS118xDP4 line's port scaling for higher resolution: 4K@30Hz instead of 1920x1200, useful for classified workstations that have moved to higher-resolution displays.
Same Security-First Restrictions
It keeps the same security-first restrictions as the rest of ATEN's secure lineup — no hotkeys, no general hub, isolated per-channel video buffers.
Comparison to Alternatives
Versus the ATEN CS1182DP4 — the older, cheaper 1080p-class secure switch, adequate if 4K isn't needed. Versus the ATEN CS1144DP4 — same 4K-capable generation, doubling the port count to 4.
Specifications
Design
| Port Count | 2 |
|---|---|
| Switching Method | Front-panel pushbutton only (no hotkey) |
Topology
| KVM Segment | Desk |
|---|
Video & Features
| Video Standard | DisplayPort |
|---|---|
| Max Resolution | 3840x2160@30Hz |
| USB Hub Ports | 0 |
| Audio Support | No |
Display continuity
| EDID Emulation | Yes |
|---|
In the box and price
| Price | 592.08 USD |
|---|
| Brand | ATEN |
|---|---|
| Model | CS1142DP4 |
| Security Certification | NIAP PP4.0 compliant (next-gen) |
| Data Isolation | Isolated 4K video buffers and push-button-only data path per channel |
| USB-C Power Delivery | No |
| Monitors | 2 |
| Spec Score | 4.9 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.5 / 10
A next-generation secure DisplayPort switch that finally brings 4K resolution to NIAP PP4.0 certified two-domain desks.
Best for
- Two-domain secure desks needing 4K resolution
- Government facilities upgrading from 1080p-class secure switches
- Workstations doing dense-dashboard or design work across two security domains
Not for
- Budget deployments where 1920x1200 is sufficient (see the CS1182DP4)
- Desks needing more than 2 secure channels (see the CS1144DP4)
- Commercial desks with no certification requirement
FAQs
What are the key specifications of the ATEN CS1142DP4 (2-Port 4K Secure DisplayPort KVM Switch / NIAP PP4.0 / $592.08)?
The ATEN CS1142DP4 (2-Port 4K Secure DisplayPort KVM Switch / NIAP PP4.0 / $592.08) is a KVM switch from ATEN. Key specs: Port Count 2 (secure), Switching Method Front-panel pushbutton only (no hotkey), Video Standard DisplayPort, Max Resolution 3840x2160@30Hz, USB Hub Ports 0 (isolated keyboard/mouse only).
Who is the ATEN CS1142DP4 (2-Port 4K Secure DisplayPort KVM Switch / NIAP PP4.0 / $592.08) best suited to?
It suits two-domain secure desks needing 4k resolution, government facilities upgrading from 1080p-class secure switches, workstations doing dense-dashboard or design work across two security domains.
What are the drawbacks of the ATEN CS1142DP4 (2-Port 4K Secure DisplayPort KVM Switch / NIAP PP4.0 / $592.08)?
It is a poor fit for budget deployments where 1920x1200 is sufficient (see the cs1182dp4), desks needing more than 2 secure channels (see the cs1144dp4), commercial desks with no certification requirement.
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