ATEN CS1148DP4C 8-Port USB DisplayPort Dual Display Secure KVM Switch with CAC
Overview
The ATEN CS1148DP4C is an 8-port secure KVM switch built for environments where information assurance is non-negotiable — government workstations, defense contractors, cleared facilities, and any multi-domain environment where a data breach between connected systems could be catastrophic. It shares a single keyboard, mouse, and pair of DisplayPort monitors across up to eight computers while maintaining strict, hardware-enforced isolation between each source and the shared peripherals. This isn't a standard KVM with a security marketing label — the CS1148DP4C is PSD PP v4.0 compliant, meaning it has been validated against a rigorous government-specified protection profile for peripheral sharing devices.
Dual DisplayPort outputs support up to 4K resolution per display, so workstations driving high-resolution intelligence, mapping, or engineering applications don't get downgraded at the KVM layer. CAC (Common Access Card) support is built in, covering the common federal authentication requirement without an external reader or additional adapter. Switching is handled via front-panel pushbuttons or remote port selection — no software agent required on any connected computer, which matters for air-gapped or high-assurance systems where installing KVM drivers is not an option. Explore the full ATEN KVM and switching catalog for additional configurations in the same secure line.
Key Features
- PSD PP v4.0 Compliance: Protection Profile for Peripheral Sharing Devices version 4.0 is the current government standard for secure KVMs. Compliance means the device has passed third-party evaluation against defined security requirements — required for many federal procurement vehicles and classified environment deployments. If your facility requires a validated device, check that PP v4.0 specifically is on the approved products list for your program.
- Hardware-Enforced Isolation Between Sources: The CS1148DP4C enforces unidirectional data flow and physical isolation between connected computers. There is no software pathway that allows data from one port to leak to another — the architecture prevents cross-domain contamination at the hardware level, which is the fundamental requirement for multi-level security (MLS) workstations.
- 8-Port Capacity: Eight computer ports reduce desk footprint in high-density analyst workstations, where operators routinely access multiple classified or separated networks. Fewer devices on the desk means fewer points of potential physical interference and a cleaner security perimeter.
- Dual 4K DisplayPort Outputs: Each connected computer drives two monitors at full 4K resolution over DisplayPort — no resolution penalty for the security layer. Analysts working with GIS, imagery exploitation, or financial modeling retain the full pixel count they need. DisplayPort also avoids the HDMI licensing overhead, which is relevant for some procurement frameworks.
- CAC Support Integrated: Common Access Card readers are a standard federal workstation requirement. Having CAC support built into the CS1148DP4C means no separate USB reader hanging off a port and no additional attack surface through a third-party peripheral. The CAC path is also subject to the same restricted peripheral connectivity rules enforced by the switch.
- Restricted Peripheral Connectivity: The switch enforces strict rules on what peripheral types are allowed through to connected computers. This prevents unauthorized devices — USB drives, rogue HID devices, data exfiltration hardware — from being introduced through the KVM's peripheral ports, which is a common attack vector on shared-access workstations.
- Agentless Switching via Front Panel or Remote Port: No KVM software agent or driver needs to be installed on any connected host. Switching is purely manual — front-panel pushbuttons or remote port selector — which eliminates a software attack surface and keeps the device compatible with locked-down OS environments, air-gapped systems, and hardened government workstation builds.
- USB Connectivity: Keyboard and mouse connect via USB, covering the dominant peripheral standard in current government and enterprise workstation deployments. No PS/2 adapters or legacy cabling required.
Integration and Compatibility
The CS1148DP4C connects to any computer with a DisplayPort video output and USB host ports — no proprietary cables required for standard configurations. The dual-display configuration requires two DisplayPort connections per computer, so verify that each source machine has two DP outputs available before specifying this model. The CAC reader integrates directly with smart card middleware already deployed in federal environments (GSA APL-listed card middleware, ActivIdentity, etc.) — no additional driver stack is needed at the KVM level. For facilities already using secure KVM switches from other vendors, the PP v4.0 compliance provides a common evaluation baseline for side-by-side security posture comparison. Pair with a DisplayPort KVM cable kit sized to your rack or workstation layout to complete the installation. For larger deployments or systems requiring matrix switching across more than eight sources, review the broader ATEN secure switching family for higher-port-count options.
Frequently Asked Questions
Q: What does PSD PP v4.0 compliance mean for the CS1148DP4C?
A: PSD PP v4.0 stands for Protection Profile for Peripheral Sharing Devices version 4.0 — a government-defined security standard evaluated by a third-party lab. Compliance means the CS1148DP4C has been tested against specific security requirements for hardware isolation, unidirectional data flow, and restricted peripheral access. Many federal and defense procurement programs require a PP v4.0 validated device on the approved products list before purchase.
Q: How many monitors can each connected computer use with the CS1148DP4C?
A: Each connected computer drives two monitors through the CS1148DP4C's dual DisplayPort outputs, at up to 4K resolution per display. This is a true dual-display configuration — both screens switch together when you move between ports, so your full desktop layout follows the active source.
Q: Does the CS1148DP4C require software or drivers on connected computers?
A: No. The CS1148DP4C uses agentless switching via front-panel pushbuttons or remote port selection. No KVM driver or software agent needs to be installed on any connected host, which keeps it compatible with air-gapped systems, locked-down government OS builds, and environments where adding software to workstations is tightly controlled.
Q: Is the CAC reader built into the switch or a separate accessory?
A: CAC support is integrated into the CS1148DP4C — no separate external reader is required. The CAC port is subject to the same restricted peripheral connectivity rules enforced by the switch, so it doesn't introduce an uncontrolled USB path.
Q: Can I use the CS1148DP4C in a multi-level security (MLS) workstation environment?
A: The CS1148DP4C is specifically designed for multi-domain and MLS environments. Hardware-enforced isolation, unidirectional data flow, and PSD PP v4.0 compliance are the core requirements for sharing peripherals across networks of different classification levels. Confirm the specific approval status for your program's approved products list before procurement.
Q: What display interface does the CS1148DP4C use?
A: The CS1148DP4C uses DisplayPort for all video connections — both to the monitors and from each connected computer. Each source computer needs two available DisplayPort outputs to use the dual-display feature. HDMI adapters are not part of the standard configuration.
The CS1148DP4C sits in a narrow product category where the wrong specification choice has serious security consequences. PSD PP v4.0 compliance is the current benchmark for peripheral sharing devices in classified and multi-domain environments — not every secure KVM on the market has cleared that evaluation, and the difference matters if you're on a federal approved products list. I've seen facilities try to use standard KVMs in cleared spaces and spend months unwinding the remediation; specifying the CS1148DP4C from the start removes that risk entirely.
Technical Highlights:
- PSD PP v4.0 Compliance: Third-party validated against the current government protection profile for peripheral sharing — the specific certification level required for most federal and defense multi-domain workstation deployments.
- Dual 4K DisplayPort at 8 Ports: Full 4K per display across both outputs, for all eight connected sources. High-resolution workloads — imagery exploitation, GIS, financial modeling — don't get throttled by the KVM layer.
- Unidirectional Data Flow + Restricted Peripheral Connectivity: Hardware architecture enforces one-way data paths and blocks unauthorized peripheral types, eliminating the lateral movement and data exfiltration vectors that make shared KVMs a liability in multi-domain environments.
Deployment Considerations:
- Each source computer requires two available DisplayPort outputs for dual-display operation — audit your workstation spec before ordering. Single-DP machines will need a different model in the family or an alternate configuration.
- PSD PP v4.0 is the current evaluation baseline, but always verify the specific device is listed on your program's approved products list before procurement. Compliance is a prerequisite, not a guarantee of automatic approval on every program.
The CS1148DP4C is the right call for cleared analyst workstations — specifically SCIF and multi-domain operator stations where an operator regularly switches between two or more networks of different classification levels and needs dual high-resolution displays on every source without compromising the isolation boundary.
