We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Vertiv

Vertiv SC840-001 4-Port DVI USB KVM Switch

SKU CH-B873-G8PRB MPN SC840-001

A secure 4-port DVI-I KVM switch with isolated processing paths, NIAP PP3.0 certification, CAC port and USB console support for 4K at 30 Hz or dual-link DVI at 60 Hz

  • TypeDVI, USB
  • Console ConnectorsUSB Type-A
  • Computer Connections4 Ports
  • Monitor Connections4 Ports
  • Video ResolutionUHD 4K - 3840X2160 pixels @ 30 Hz (via DVI to HDMI cable) DV
  • PC SelectionPush Buttons

Style 4-Port DVI-I

  • NIAP PP3.0 certified security prevents data leakage between ports
  • Four DVI-I ports support dual-link 2560x1600 at 60 Hz or UHD 3840x2160 at 30 Hz
  • Front push buttons give instant PC selection with lock-status LEDs
  • CAC port enables secure smart-card authentication for each connected system
  • Wide 100-240 V AC input and 0-40 °C operating range suit global deployments

Secure 4-Port DVI KVM Switch

The Vertiv SC840-001 is a secure desktop KVM switch designed for environments that require strict data isolation. It lets a single operator control four separate computers using one USB keyboard, mouse and DVI monitor. Certified to NIAP Protection Profile V3.0, it targets government and defence users who need assured separation between classified and unclassified networks.

Video capacity and port limits

The switch supports UHD 4K at 3840x2160 pixels @ 30 Hz when a DVI-to-HDMI cable is used, and dual-link DVI at 2560x1600 pixels @ 60 Hz with a native DVI cable. VGA sources are handled up to 2048x1536 pixels via adapter. Four computer ports and four monitor ports are provided; the unit does not support more than four connected systems or displays beyond the listed resolutions.

Thermal, noise and power profile

Operating temperature ranges from 32° to 104° F (0° to 40° C) with humidity at 0-80% RH non-condensing. Maximum internal power draw is 35 W from a 100-240 V AC supply. The enclosure has no moving parts, so acoustic output is negligible in normal office conditions.

Highlights

  • NIAP PP3.0 certified security prevents data leakage between ports
  • Four DVI-I ports support dual-link 2560x1600 at 60 Hz or UHD 3840x2160 at 30 Hz
  • Front push buttons give instant PC selection with lock-status LEDs
  • CAC port enables secure smart-card authentication for each connected system
  • Wide 100-240 V AC input and 0-40 °C operating range suit global deployments

Specifications

BrandCybex
ModelSC840-001
TypeDVI, USB
Console ConnectorsUSB Type-A
Computer Connections4 Ports
Monitor Connections4 Ports
Video ResolutionUHD 4K - 3840X2160 pixels @ 30 Hz (via DVI to HDMI cable)
DVI dual-link - 2560X1600 pixels @ 60 Hz (via DVI cable)
VGA - 2048X1536 pixels
PC SelectionPush Buttons
Monitors SupportedDVI-I, single-link/dual-link
HDMI and VGA with adapter
TemperatureOperating Temperature: 32° to 104° F; 0° to 40° C
Storage Temperature: "-4° to 140° F; -20° to 60° C"
Humidity0-80% RH, non-condensing
Audio Featureswith Audio
Power FeaturesPower Requirements: 35W Max Internal
AC Input Voltage: 100 to 240V AC
USB Featureswith USB support
FeaturesOutstanding security - Designed to meet the requirements of the latest National Information Assurance Partnership (NIAP) Protection Profile V3.0 for peripheral-sharing devices.
Discrete processing paths - Isolated ports on the switch provide discrete processing paths to each system, preventing data leakage, transfer or crosstalk between adjacent ports.
Unique NUM Lock, CAPS Lock and Scroll Lock indicators - While the Cybex series maintains unidirectional data flow, it also provides indicators that alert users when the NUM Lock, CAPS Lock or Scroll Lock is on to improve ease of use.
G
Dimensions1.70" x 13.70" x 5.00"
Weight3.20 lbs.
Shipping weight2.72 kg
Package size586 × 384 × 114 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will my older VGA monitors work with the SC840-001 switch?

Yes, VGA monitors are supported at 2048x1536 resolution using a suitable DVI-to-VGA adapter on the DVI-I ports.

How can I verify the SC840-001 is operating correctly after connecting four computers?

Press the front push buttons to cycle ports; the NUM Lock, CAPS Lock and Scroll Lock LEDs show the active port and keyboard status.

Does the SC840-001 include the DVI cables needed for four computers?

The package contains the KVM unit and a power adapter; DVI cables for each computer connection must be purchased separately.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.