
SK41D-3 • SK41P-3 • SK41H-3 • SK41DU-3 • SK41PU-3 • SK41HU-3
SECURE 4PORT
SINGLEHEAD KVM SWITCHES
Securely share keyboard, video, mouse, audio and USB devices
to simplify user experience when working with multiple computers.
Ultra HD
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NIAP PP PSS 3. 0
CERTIFIED
COMMON CRITERIA
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Keyboard Video Mouse (KVM) switch offered by HSL
allows securely sharing of keyboard, video, mouse,
audio and USB peripherals between multiple computers
while maintaining the highest isolation.
KVM HIGHLIGHTS
• NIAP Common Criteria PP3.0 Certication
HSL KVMs qualify to the latest NIAP Common Criteria Protection
Profile version 3.0 (PP3.0) certification for peripheral Sharing
Switch (PSS) devices.
• Securely share peripherals across dierent security domains
Securely share peripherals between computers that belong to
dierent security classications levels while keeping the highest
possible data separation security.
• Prevent information leaks
Obstacle threats derived from sharing and switching of
vulnerable, untrusted or unauthorized peripheral devices.
Block peripheral exploits, information leaks, eavesdropping,
signal transmission, computer malware, hardware and rmware
tampering by enforcing multilayered security mechanisms.
• Filter USB Peripherals
Block unauthorized USB devices while allowing secure switching
of smart card and biometric authentication devices between
computers. Whitelist and blacklist specic USB devices based on
VID/PID characteristics.
Single Display
Speakers
PC #4
Top Secret
Single
Keyboard & Mouse
HSL Single-Head 4-Port Secure KVM Switch
System Diagram
SECURE
SECURE
KVM SWITCH
KVM SWITCH
Multiple Sources
Obviate the need for purchasing and installing
dedicated, per-computer peripheral sets.
SECURITY FEATURES
• USB Security
- Block unauthorized USB devices.
- USB authentication devices are authorize by default.
- Whitelist and blacklist specic USB devices based on VID/PID
characteristics.
• Video Security
- Computer video input interfaces are isolated through the use of
dierent electronic components, power and ground domains.
- The display is isolated by a dedicated, read-only, EDID emulation
for each computer.
- Access to the monitor’s Extended Display Identification Data
(EDID) is blocked.
- Access to the Monitor Control Command Set (MCCS commands)
is blocked.
• Keyboard & Mouse Security
- The keyboard and mouse are isolated by a dedicated, USB
device emulation for each computer.
- One-way, peripheral-to-computer data ow is enforced through
unidirectional optical data diodes.
- Communication from computer-to-keyboard/mouse is blocked.
- Non HID (Human Interface Device) data transaction is blocked.
• Audio Security
- Enforce computer-to-speaker, one-way ow of sound through
unidirectional optical data diodes.
- Prevent eavesdropping and line-in re-tasking by blocking
speaker-to-computer communication.
• Hardware Anti-Tampering
- Any attempt to open the product enclosure will activate an antitamper system making the product inoperable.
- Blinking LEDs provide a clear indication of a tampering event.
- Special holographic tampering evident labels on the product’s
enclosure provide a clear visual indication if the product has
been opened or compromised.
• Firmware Anti-Tampering
- There is no access to the product ’s rmware or memory through
any port.
- Firmware is permanently stored on a non-reprogrammable
Read Only Memory (ROM) to prevent any modication.
- Firmware integrity is verified through a self-test procedure
during power-up. Upon detection of a critical failure the device
disables normal operation and provides the user with a clear
visual indication of failure.
© 2017 High Sec Labs Ltd. All rights reserved. All trade names are trademarks or registered trademarks of respective manufacturers listed.
Specications are subjected to change without prior notice. Multiple patents pending. HDC12878 Rev 1.8

SPECIFICATION
PART NUMBER SK41D/DU3 SK41P/PU3 SK41H/HU3
No. of Sources 4 4 4
CONSOLE PORTS
Displays
1 x DVI-I, single-link/
dual-link
1 x HDMI 1.4 1 x HDMI 1.4
Max Resolution
(Input & Output)
UHD 4K -
3840X2160 @ 30 Hz
(via DVI to HDMI cable)
DVI dual-link -
2560X1600 @ 60 Hz
(via DVI cable)
Supporting UHD 4K
resolutions up to
3840x2160 @ 30 Hz
Supporting UHD 4K
resolutions up to
3840x2160
Mouse and Keyboard
USB Type A, PS/2 USB Type A, PS/2 USB Type A, PS/2
Audio Jack 3.5 mm Jack 3.5 mm Jack 3.5 mm Jack
fUSB Port USB Type A (SK41DU-3) USB Type A (SK41PU-3) USB Type A (SK41HU-3)
COMPUTER PORTS
Display Type
1 x DVI-I, single-link/
dual-link
1 x DisplayPort 1.2 1 x HDMI 1.4
Mouse and Keyboard
USB Type B USB Type B USB Type B
Audio Jack 3.5 mm Jack 3.5 mm Jack 3.5 mm Jack
fUSB Ports USB Type B (SK41DU-3) USB Type B (SK41PU-3) USB Type B (SK41HU-3)
PHYSICAL
Dimensions 342 x 148 x 42 mm / 13.7 x 5.8 x 1.7 inches
Weight 1.6 kg (3.2 lbs)
POWER
Power Requirements 35W Max
AC Input 100 to 240V AC
Power Type Internal
ENVIRONMENTAL
Operating Temperature 32° to 104° F (0° to 40° C)
Storage Temperature -4° to 140° F (-20° to 60° C)
Humidity 0-80% RH, non-condensing
SOFTWARE
Supported OS Windows, Linux, Mac
CERTIFICATION
Security Certication NIAP Common Criteria PP3.0 for Peripheral Sharing Switch (PSS) devices
Product Certication CE, RCM, FCC class B, VCCI, TUV US, TUV Canada
GENERAL INFO
Made In ISRAEL
Product life-cycle 10 years
Warranty 2 Years
SK41D -3 / S K41DU -3
SK41D-3 • SK41P-3 • SK41H-3 • SK41DU-3 • SK41PU-3 • SK41HU-3
SK41P -3 / S K41PU-3
SK41H -3 / S K41HU- 3
OPERATIONAL HIGHLIGHTS
• Freeze USB (SK41DU-3/PU-3/HU-3)
Assign the USB port to a specific computer
while switching the keyboard, video, mouse
and audio between other computers. Useful
for various scenarios, for instance, when a USB
smart card reader must remain mapped to a
certain computer.
• Smoothly switch between computers
(Virtual Display Technology)
Automatically switch control from one
computer to another by dragging the mouse
cursor over the computer’s display border.
Peripherals switch to the next computer
without having to press any buttons once the
mouse is passing the display border.
• View applications in Ultra High
Denition (UHD) 4K video quality.
Never compromise on video quality. Run
graphic-intensive, ultrahigh definition
applications on all single and dual monitor
KVM models.
• Avoid typing mistakes
Since two-way communication is blocked by
the KVM security, keyboard lock LEDs do not
function. Help users avoid typing mistakes by
visually indicating the status of keyboard lock s
(CAPS-LOCK | NUM LOCK | SCROLL LOCK) on
the product’s front facing panel.
• Keep up with future requirements
through interchangeable KVM / KM
functionality
Adjust with versatile setup scenarios. The
device can be congured in two modes, KVM
and KM. In KVM mode (default) one display,
keyboard and mouse set is shared between
all computers. In KM mode each computer
is connected to a separate display while
keyboard and mouse are shared, thus allowing
simultaneous work on multiple computers.
© 2017 High Sec Labs Ltd. All rights reserved. All trade names are trademarks or registered trademarks of respective manufacturers listed.
Specications are subjected to change without prior notice. Multiple patents pending. HDC12878 Rev 1.8
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