Description
The Vertiv Avocent Cybex SC840DPHC-400 is a high-assurance 4-port secure desktop KVM switch engineered for mission-critical environments requiring strong data protection. Designed for use in defense, government, and security-sensitive applications, this TAA-compliant switch provides seamless switching between four isolated systems while maintaining data integrity and preventing information leaks.
Featuring NIAP PP 4.0 certification, Common Access Card (CAC) reader support, and tamper-evident hardware, the SC840DPHC-400 meets the highest cybersecurity standards. It supports UHD 4K resolution at 60Hz on a single head and offers flexible connectivity via DisplayPort and HDMI interfaces. Backed by a full 3-year warranty and optional extended coverage, this KVM switch ensures secure, efficient control with peace of mind.
| Specification | Details |
|---|---|
| Manufacturer | Vertiv |
| Brand Name | Vertiv AVOCENT |
| Product Line / Series | Cybex SC800 |
| Model Number | SC840DPHC-400 |
| Product Type | Secure Desktop KVM Switch |
| Ports Supported | 4 |
| Monitor Support | Single Head, up to 3840 x 2160 @ 60Hz (UHD 4K) |
| Input Interfaces | 4x DisplayPort, 4x HDMI, 6x USB, 4x PS/2 |
| CAC Support | Yes – Common Access Card (Smart Card) |
| NIAP Certified | Yes – Version 4.0 |
| TAA Compliant | Yes – Made in USA |
| Security Features | Unidirectional Data Flow, Tamper-Evident Design, Intrusion Detection |
| KVM Technology | Digital & Analog |
| Connectivity | Wired |
| Local User(s) Supported | 1 |
| Remote User(s) Supported | 0 |
| Form Factor | Desktop / Rack-mountable (1U) |
| Power Input | 100–240VAC, 1.5A |
| Dimensions (HxWxD) | 1.7” x 13.7” x 5” |
| Weight | 3 lbs |
| Shipping Weight | 5 lbs |
| Warranty | 3-Year Full Coverage Factory Warranty |
| Extended Warranty Option | Available |
| Certifications | NIAP 4.0, RoHS |
| Included in the Box | SC840DPHC-400 KVM Switch, Power Supply, Documentation |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
