K204 Secure KVM Switch: 4-Port, DVI-I.

How to Order

The K204 is a secure 4-port, DVI-I KVM Switch.

It allows users to share peripherals - keyboard, mouse and monitor - between four different security-level networks/computers.

K204 supports four isolated computers each hav‌ing DVI-I video output. In addition to supporting DVI-I dual-link signals, it supports VGA and HDMI interfaces with the use of the applicable adapters.

K204 is equipped with an RDC port enabling user-friendly, comfortable remote control of the KVM switch.

The K204 is built by design to provide highest possible isolation between four connected computers. It meets the requirements of companies challenged by the need to provide both secret and top-secret network access together with unclassified or Internet access.

The K204 is a perfect fit for high-security organizations such as government agencies, military and financial institutions, and any other organization that handles sensitive and confidential information.

The products are fully compatible with EAL4+ and NIAP security requirements.

System Diagram

  • DVI-I support:
    supports four computers each connected to a single display. Can drive VGA, HDMI and dual-link DVI video
  • Future-proof:
    Supports widest range of video formats from VGA, single-link to 2560x1600 dual-link DVI and HDMI; supports latest keyboards, mice and all Operating Systems
  • Highest security by design:
    Common Criteria EAL 4+ approved, compatible with NIAP security requirements
  • Hardware-based peripherals isolation:
    no dependency on firmware or software; all firmware on ROM (Read Only Memory); no keyboard buffering or memory.
  • Unidirectional Optical Data Diodes:
    assuring USB peripherals isolation; data can flow from devices to host only.
  • Display plug & play (DDC) protection:
    leakage prevention through patented emulated technology; signaling attacks prevented by design; DDC/EDID fully functional.
  • Peripherals Security:
    full USB device filtering to assure support for keyboard and mouse only.
  • Active anti tampering system:
    always-on with 10 years battery; holographic tampering evident labels        

K204 Secure KVM Switch: 4-Port, DVI-I

Host Input Ports

  • 4 x DVI-I Female connectors (VGA and HDMI supported via adapters)
  • 4 x USB Type-B connectors for keyboard and mouse
  • 4 x Audio out 3.5 mm stereo jacks for audio input

Console ports

  • 1 x DVI-I Female connector for user displays
  • 2 x USB Type-A jacks for USB Mouse & Keyboard
  • PS/2 keyboard connector (DIN-5)
  • PS/2 mouse connector (DIN-5)
  • Audio out 3.5 mm stereo jack for audio output
  • Remote Desktop Controller (RDC) port

Channel Switching

  • Front Panel push buttons
  • Keyboard shortcuts
  • Remote Desktop Controller (RDC) (Sold separately)

Video modes supported

  • DVI Dual-link supports resolution up to 2560 x 1600
  • DVI Single-link supports resolution up to 1920x1200
  • HDMI supported through adapters or cables
  • VGA display supported. Resolution up to 2048x1536


  • DC input 12V / 1.5A maximum
  • Wall mounted power supply included. Power input 90-240V AC


  • Temperature range: Operating - 0ºC to 40ºC (32ºF to 104ºF); Storage -  -20ºC to 60ºC (-4ºF to 140ºF)
  • Humidity: Operating - 20 to 80% non-condensing; Storage – 10 to 90% non-condensing

Regulatory Compliance

  • Safety: UL/cUL60950,EN60 950
  • EMI/EMC: FCC Class B, CE Mark, EN55022B, VCCI

Security Accreditations

  • Common Criteria EAL 4+ ALC_FLR.3 certified
  • Complies with NIAP Peripheral Sharing Switch (PSS) For Human Interface Devices Ver 2.1

Physical Characteristics

  • Dimensions: 320(W) x 130 (D) x 52 (H) mm / 12.8 (W) x 5.2 (D) x 2 (H) inch
  • Device weight: 1.47 Kg. (3.2 lbs.)

Warranty, reliability

  • Product life-cycle 10 years
  • Warranty 2 Years 
  Specification Sheets File Size Date
K204 & K204E 4-port secure KVM switch datasheet

This document provides the specifications for K204 & K204E 4-port secure KVM switch.

876 KB 9 Feb, 2015


K204 - 4 Ports High Security KVM, USB PS/2 keyboard and mouse, DVI-I dual-link, Active anti-tampering, Front panel push-buttons, RDC Port 

Related Products



Notice: Undefined offset: 0 in /var/www/vhosts/highseclabs.com/httpdocs/views/cats.php on line 25 Notice: Undefined offset: 0 in /var/www/vhosts/highseclabs.com/httpdocs/views/cats.php on line 27 Notice: Undefined offset: 0 in /var/www/vhosts/highseclabs.com/httpdocs/views/cats.php on line 31 SQL Error in:
SELECT parentid from products_cats_subs where id= and status=1
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and status=1' at line 1