Vertiv SC920DPH-400 Secure 2-Port 4K DisplayPort Desktop KVM Switch
Overview
The Vertiv SC920DPH-400 is a secure desktop KVM switch from the Cybex SC900 series, purpose-built for high-assurance environments where operators need to control two computers from a single console without compromising the isolation between them. With dual DisplayPort outputs driving 4K Ultra HD at 3840×2160 resolution and 60Hz refresh, it delivers full-fidelity video for demanding workstations — CAD, video, command-and-control, or classified/sensitive compartmented information facilities (SCIFs) where the physical separation of compute resources is non-negotiable.
Unlike a conventional KVM, the Cybex SC900 series is engineered around strict port isolation. The SC920DPH-400 (often searched as SC920DPH 400) is part of Vertiv's Cybex secure KVM line, a family designed specifically for government, defense, financial, and enterprise deployments where hardware-enforced security between connected hosts is required — not just software switching.
Key Features
- Dual 4K DisplayPort at 60Hz: Two DisplayPort video connections on both the host and console sides support 3840×2160 resolution at 60Hz — meaning you get full 4K on each of two monitors simultaneously. If your workstation runs a dual-monitor setup with 4K displays, this switch won't be the bottleneck. No resolution downgrade, no refresh rate penalty.
- USB Keyboard and Mouse Ports: Both keyboard and mouse connect via USB — the current standard for modern workstations. No PS/2 legacy adapters needed, and USB provides reliable low-latency HID response without driver complexity.
- USB 2.0 Type-A Hub Ports (×2): Two USB 2.0 hub ports on the console side let you share additional USB peripherals — smartcard readers, CAC readers, USB tokens, or other authentication devices — across connected hosts. In a DoD or government context, this matters: CAC reader sharing eliminates the need to physically move the reader between machines.
- 3.5mm Headphone Console Port: The console audio port (3.5mm headphone) means you can route audio from the active host to a single headset or speaker set. For operators monitoring audio feeds or handling voice communications, this avoids running separate audio cabling per workstation.
- Wide-Range AC Input (100–240V, 2.5A) with External Adapter: The external power adapter accepts 100–240V input, making the SC920DPH-400 compatible with both North American and international power standards. You're not locked to a specific region, and the external brick keeps the switch chassis compact and cool.
- Multi-Certification Compliance (FCC Class A, CE, TUV US, TUV Canada, RCM, VCCI): Holding FCC Class A, CE, TUV US, TUV Canada, RCM, and VCCI certifications means this unit can be deployed in commercial facilities across North America, Europe, and Australia/New Zealand without additional compliance work. For enterprise procurement teams managing multi-region deployments, this breadth of certification reduces qualification overhead.
- Non-Rack-Mount Desktop Form Factor: The SC920DPH-400 is designed for desktop deployment — not rack installation. This is intentional for individual operator stations where a 1U rack slot is either unavailable or inappropriate. It keeps the unit close to the operator console where physical security of the switch itself is easier to enforce.
- Black Chassis: The black finish is standard for professional and government operator environments — blends into typical operator desk or console setups without drawing attention.
Integration and Compatibility
The SC920DPH-400 is built around standard, modern interface specs: USB HID for keyboard and mouse, and DisplayPort for video. This means it integrates cleanly with any workstation — Windows, Linux, or other OS — that exposes standard USB HID and DisplayPort outputs. No proprietary drivers are required for basic KVM operation.
The dual DisplayPort architecture requires that both connected hosts have DisplayPort outputs. If your workstations use HDMI or DVI, you will need active DP adapters — passive adapters may not pass 4K@60Hz reliably, so verify adapter specs before deployment. For workstations in secure KVM switch environments that already standardize on DisplayPort (common in CAD and government deployments), the SC920DPH-400 drops in without adaptation.
The USB 2.0 hub ports support peripheral sharing for devices like CAC readers or USB authentication tokens — relevant to any deployment following a physical access control regime that ties workstation login to hardware credentials. Note that USB 2.0 bandwidth (480 Mbps theoretical) is appropriate for HID and smartcard peripherals but is not suited for high-throughput storage devices.
For power, the external AC adapter (100–240V, 2.5A) keeps the switch independent of any PoE or DC power infrastructure — relevant if you're reviewing power planning for an operator station build-out. No UPS tap or PoE switch port is consumed.
Frequently Asked Questions
Q: What video resolution does the SC920DPH-400 support?
A: The SC920DPH-400 supports up to 3840×2160 (4K Ultra HD) at 60Hz via DisplayPort. Both host-side and console-side connections are DisplayPort, and both support this maximum resolution simultaneously across dual monitors.
Q: Does the SC920DPH-400 require rack mounting?
A: No. The SC920DPH-400 is a desktop unit and does not support rack mounting. It is designed for individual operator workstation deployments, not rack-based server rooms or data centers.
Q: What certifications does the SC920DPH-400 carry?
A: The SC920DPH-400 is certified for FCC Class A, CE, TUV US, TUV Canada, RCM, and VCCI. These certifications cover commercial deployment in North America, Europe, and Australia/New Zealand.
Q: What type of power supply does the SC920DPH-400 use?
A: It uses an external AC power adapter with an input range of 100–240V at 2.5A. The wide voltage range makes it compatible with both North American and international power outlets.
Q: Can I share a CAC reader or USB security token between hosts using the SC920DPH-400?
A: Yes. The SC920DPH-400 includes two USB 2.0 Type-A hub ports on the console side, which support sharing USB peripherals — including CAC readers and USB authentication tokens — across connected hosts.
Q: Does the SC920DPH-400 support audio switching?
A: The console side includes a 3.5mm headphone port for audio output. This allows a headset or speakers to receive audio from the active host without requiring separate per-host audio cabling.
The SC920DPH-400 is the model I recommend when a customer has a dual-monitor 4K DisplayPort workstation setup and needs port isolation between two hosts — not just a software-switched convenience KVM. The dual DisplayPort architecture, running at 3840×2160 @ 60Hz on both outputs, means there is no visual compromise compared to a direct-connected workstation. That matters in CAD, intelligence, and command environments where operators are making decisions based on what they see on screen.
Technical Highlights:
- Dual 4K DisplayPort @ 60Hz: Two independent DisplayPort channels on both host and console sides sustain 3840×2160 at 60Hz — no resolution or refresh degradation across the switch. Full-fidelity 4K on a dual-display console is a hard requirement in many government and engineering deployments.
- USB 2.0 Hub Ports (×2): The two USB 2.0 Type-A hub ports on the console side are the feature most buyers underestimate. In practice, this is where the CAC reader or PIV-card reader lives — shared across both hosts without physical relocation. It streamlines the workstation login flow in any environment mandating hardware-token authentication.
- FCC Class A + TUV US/Canada + CE + RCM + VCCI: Six certifications across four regulatory jurisdictions. For a procurement officer qualifying a switch for deployment across a multi-region enterprise or government program, this avoids the need to manage separate SKUs by region.
Deployment Considerations:
- Both connected hosts must have native DisplayPort outputs. If a host uses HDMI or mini-DP, plan for active DP adapters — passive adapters frequently fail to negotiate 4K@60Hz and will silently fall back to lower resolution. Verify adapter specs before deployment, not after.
- The external AC adapter (100–240V, 2.5A) is a separate brick — account for an outlet and cable run at the operator desk. It is not powered by USB or PoE, so there is no option to simplify cabling by tapping the switch infrastructure.
This is the right switch for a two-host operator station in a government, defense contractor, or financial trading environment where the monitors are already 4K DisplayPort and the operator needs a physically isolated, certified switch with CAC-reader sharing and audio at the console — not a generic IT KVM from a consumer electronics shelf.
