Vertiv SCKM140PP4-400 4-Port KM Desktop Switchbox

Overview

The Vertiv SCKM140PP4-400 is a four-port KM (keyboard and mouse) switchbox from the Vertiv Cybex SCKM line, purpose-built for operators who need to control up to four computers from a single keyboard and mouse without the overhead of a full KVM stack. If your use case is a control room, NOC, or broadcast desk where each machine drives its own display but you want unified peripheral control across all four seats, the SCKM140PP4-400 eliminates the cable clutter and workflow interruption of swapping USB devices manually. It supports 4K UHD resolution at 3840 x 2160, so every connected monitor can run at native resolution — a meaningful consideration when analysts or engineers depend on high-density screen real estate. TAA compliance makes it a straightforward fit for federal and government procurement vehicles without waiver paperwork. The SCKM140PP4-400 (often searched as SCKM140PP4 400) is manufactured in the United States and backed by a 3-year manufacturer warranty.

Key Features

• 4-Computer Support, 1 Operator: One keyboard and one mouse command up to four separate computers — no peripheral shuffling between workstations. In a NOC or dispatch environment, this directly reduces the fatigue and errors that come from physically relocating input devices every time an operator switches focus.
• 3840 x 2160 (4K UHD) Video Pass-Through: The switch doesn't degrade or cap your display signal — each connected computer continues to drive its own monitor at full 4K UHD resolution. If you're running 4K displays for GIS mapping, video wall feeds, or engineering CAD, resolution is preserved end to end.
• USB 2.0 with 6 USB Ports: Six USB 2.0 ports across the unit give you enough bandwidth for keyboard, mouse, and ancillary peripherals (CAC readers, headsets, input tablets) without fighting for port access. USB 2.0 is the right call here — KM input devices don't need USB 3.x throughput, and it keeps compatibility broad across legacy and current hardware.
• 4 PS/2 Ports: Legacy PS/2 support means you're not forced to replace older government or industrial keyboards that ship with PS/2 connectors — relevant in federal facilities and older infrastructure environments where PS/2 endpoints are still in active use.
• 100–240V AC Input Voltage: Universal AC input means the unit operates on both North American 120V and international 240V infrastructure. No step-down transformer needed if the hardware ever moves to a different facility or region.
• Desktop Form Factor, 1-Inch Profile: At 1 inch tall, 13.7 inches wide, and 5 inches deep, the SCKM140PP4-400 sits flat on a desk or console surface without dominating the workspace. It's not rack-mounted, which keeps it accessible for operators who need to physically interact with the unit during shift transitions.
• TAA Compliant: Trade Agreements Act compliance confirms the unit meets federal procurement origin requirements — a gate-level requirement for GSA Schedule, DOD, and other U.S. government contracts. No compliance exceptions or waivers needed.
• Made in the United States: Country of origin is the United States, which supports NDAA supply chain requirements and simplifies procurement audit trails for security-sensitive environments.

Integration and Compatibility

The SCKM140PP4-400 is part of the broader Vertiv Cybex switching line, which spans full KVM matrices, single-head switches, and secure isolated models. As a KM-only switch, it does not consolidate video signals — each computer retains its own independent display chain. This is the correct architecture for multi-monitor control rooms where operators need to see all four screens simultaneously while sharing a single keyboard and mouse. The USB 2.0 peripheral bus is compatible with virtually all modern operating systems including Windows, Linux, and macOS without custom drivers. If you're evaluating this unit alongside full KVM switches, the key tradeoff is this: KM gives you peripheral consolidation with zero video signal interference, while KVM consolidates both — but adds latency and resolution constraints on older analog KVM installations. For 4K multi-display environments where each screen must run at native resolution, KM is often the more practical choice. Pair with a console management solution for out-of-band access to the connected systems.

Frequently Asked Questions

Q: Is the SCKM140PP4-400 TAA compliant?

A: Yes. The SCKM140PP4-400 is TAA compliant and manufactured in the United States, making it eligible for U.S. federal government procurement under GSA Schedule and similar vehicles without additional compliance waivers.

Q: What is the maximum video resolution supported by the SCKM140PP4-400?

A: The SCKM140PP4-400 supports up to 3840 x 2160 (4K UHD) resolution. Because this is a KM switch — not a KVM — each computer drives its own monitor independently, so there is no video signal consolidation or resolution cap imposed by the switch itself.

Q: How many computers can the SCKM140PP4-400 control?

A: The SCKM140PP4-400 supports up to four computers controlled by one local user. It does not support remote or multi-user access — it is a single-operator, four-computer KM switch.

Q: Does the SCKM140PP4-400 support PS/2 keyboards and mice?

A: Yes. The unit includes four PS/2 ports, which allows connection of legacy PS/2 input devices alongside USB peripherals. This is useful in government and industrial environments where PS/2 keyboards remain in active use.

Q: What is the warranty on the SCKM140PP4-400?

A: The SCKM140PP4-400 carries a 3-year manufacturer warranty.

Q: What is the difference between a KM switch and a KVM switch — and which should I choose?

A: A KM switch (keyboard and mouse only) shares input peripherals across multiple computers while each computer retains its own independent display. A KVM switch (keyboard, video, mouse) consolidates all three, routing video through the switch. Choose a KM switch like the SCKM140PP4-400 when every connected computer needs its own dedicated 4K display running at full native resolution simultaneously. Choose a KVM when you want a single-monitor setup that switches between machines.

Marty Allison

The SCKM140PP4-400 fills a specific gap that pure KVM switches can't address cleanly: four-computer control in a multi-display environment where every screen needs to stay live at 3840 x 2160 simultaneously. I spec this unit in control room and dispatch console builds where operators monitor independent feeds across all four machines without toggling video — the KM architecture means zero signal interference with the display chain.

Technical Highlights:

• 4K UHD Pass-Through: At 3840 x 2160, each connected machine drives its own monitor at native resolution — no downscaling artifacts, no refresh rate penalties. Critical when displays are running GIS overlays or high-resolution video feeds that would degrade on a legacy KVM's analog video path.
• 6 USB 2.0 Ports: Enough port density to accommodate keyboard, mouse, a CAC/smart card reader, and a headset on a single switch without a hub. USB 2.0 throughput is more than sufficient for all HID-class peripherals, and the broad compatibility avoids driver conflicts across mixed OS environments.
• TAA + U.S. Origin: Both boxes checked in a single SKU — TAA compliance for procurement eligibility and U.S. manufacturing for supply chain documentation. Eliminates the back-and-forth with contracting officers that non-TAA products generate on government bids.

Deployment Considerations:

• The desktop form factor (1 inch tall, 13.7 inches wide) is designed for console surface mounting, not rack integration — confirm your console furniture has the horizontal surface depth (5 inches minimum) before ordering for tight custom console builds.
• This is strictly a KM switch: peripheral sharing only, no video consolidation. If your operator actually needs to switch between machines on a single display rather than watch all four simultaneously, a KVM from the Vertiv Cybex line is the correct selection instead.

Best fit for government NOC and dispatch environments running four dedicated 4K workstations where TAA compliance is a hard procurement requirement and operators need to stay eyes-on all screens at all times — not toggle between them.