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K304  •  K304E  •  K308  |  

QUICK START GUIDE

4/8 Ports High Security KM Switch

Models:
K304

 – 4 Ports High Security KM Switch 

K304E

 – 4 Ports High Security KM Switch with fUSB 

K308

 – 8 Ports High Security KM Switch

Overview

HSL Secure KM Switch enables users to simultaneously operate four or eight computers, 
each with its own displays, using a single set of keyboard and mouse. The user can easily 
switch between computers and displays by simply moving the cursor from one display 
to another.
For proper use, the HSL Secure KM Switch must be configured correctly according to the 
actual placement of the displays, relative to each other. 
This guide instructs how to install and configure the relative location of the displays to 
match their physical locations.
There are two ways to configure the HSL Secure KM Switch with the actual display setup:
• 

Select one of the predefined setups

• 

Create and load a custom configuration file

Installation

Before configuring the HSL Secure KM Switch, connect all computers and components. 
1.  Connect the KM Switch by plugging 'A' to 'B' USB cable to each computer’s USB port.
2.  If the computer uses audio output (speakers or headphones), connect an audio 

cable from its audio output port to the corresponding 

AUDIO

 input port on the 

KM Switch.

3.  Connect the following items to the console ports of the KM Switch:

•  Keyboard to 

Keyboard

 (USB) or 

PS/2 K

•  Mouse to 

Mouse

 (USB) or 

PS/2 M

•  Headphones or Speakers to 

Audio

•  Desktop Controller Unit to 

RDC

 

Connect the electrical supply:

•  4 Port – 12V 1.5A DC power supply
•  8 Port – 110V or 220V AC power cable

4.  Install the KM Driver software on every connected Windows

®

 computer with 

multiple displays (a computer with more than one monitor connected to it):  
•  Download the 

HSL KM Multi-Display Driver

 from http://highseclabs.com/

dl.php?fid=446

•  Double-click 

KMDriver

 to begin installation.

•  Follow the instructions until the installation is complete.
•  Repeat procedure for every computer with multiple displays.

K304 Secure KM Switch

Keyboard

Audio

RDC

Computers

Mouse

Displays

1

2

3

4

1

2

3

4

1

2

3

4

See the 

HSL 4/8 Ports High Security KM Switch User Manual

 for complete installation 

instructions.

Select a Predefined Setup

The easiest way to configure the HSL Secure KM Switch is to load one of the predefined 
settings available in its non-volatile memory. To select a pre-defined configuration, type 
on the console keyboard: 

Ctrl + Ctrl + F11 + Fx

 (see numbers in the figure to the right). 

Additional settings can be accessed through 

Ctrl + Ctrl + F11 + x + y

.

After selecting a new configuration the KM Switch makes a fast clicking sound. 
Disconnect and reconnect electrical power to apply this new configuration. 

F1

 is the default configuration. Four computers with  

a single display each are arranged as shown.

1

 

2

3

 

4

 

Click 

F2

 through 

F10

 to select a preset configuration as listed in the left column of the 

table to the right. 

For example, press 

Ctrl

Ctrl

F11

F5

 to set the 

configuration:

1

 

2

 

3P

 

3S

Computers 1 and 2 each with a single display. Computer 3 with two displays.

Note:

 Only Windows computers can use two multiple displays with the KM.

To select one of the configurations in the other columns:
Press 

Ctrl

Ctrl

F11

X

X

 (

X

X

 is the number sequence after 

F11

)

For example, press 

Ctrl

Ctrl

F11

3

0

 in sequence  

to set the configuration:

6

 

7

 

8

 

1

 

2

 

3

 

4

 

5

Keyboard Shortcuts

Key Sequence

Name

Description

CTRL, CTRL,F11, r

Reset to Factory 
defaults

Device will reset to factory defaults. All settings and 
configurations will be deleted completely.

CTRL, CTRL, F11, f

Freeze

Disable SCS. Switching between systems will not be 
possible via mouse movement.

CTRL, CTRL,F11, u

Unfreeze

Enable SCS. Switching between systems will be 
possible via mouse movement

CTRL, CTRL,F11, +

Increase mouse 
speed

Mouse speed will be increased.

CTRL, CTRL,F11, - 

Decrease mouse 
speed

Mouse speed will be decreased.

CTRL, CTRL,F11, d, c  

Setup mode

In the next boot after pressing this key combination, 
the device will boot into setup mode allowing him to 
communicate with configuration utility

CTRL, CTRL,F12

Last Loaded 
Configuration

Revert to the last externally loaded configuration 
(configuration loaded via configuration utility).

Advanced Setup

If none of the preset configurations fit your display setup, you can create a custom 
configuration and load it to the KM, which can be done on a separate computer not 
connected to the KM Switch.
Creating and loading the custom configuration is a 2-step process:
• 

On a separate computer, create a custom configuration

• 

Load the configuration to the KM Switch

Step 1 – Create a Custom Display Configuration

Note:

 To define a new configuration file, you will need to know the resolution and size of 

every display, along with the coordinates of every secondary display (on a computer that 
has more than one display connected to it). See 

Display Resolution and Coordinates

 

for instruction on how to get the resolution and coordinates of each display.

1.1 

On a separate computer, install the KM Admin Setup, which installs the 

KMC 

Creator

 and 

KMC Loader

 applications. (Link: http://www.highseclabs.com/

Resources/Software%20Downloads/HSL_KM_Adminsetup.zip)

1.2 

Open 

KMC Creator

.

1.3 

Click 

New Project

 to create a new configuration. 

1.4 

In the 

KM Project Setup

 dialog, enter the 

required information, and then click 

Next

.

Project Name:

Name of the configuration

Product Model:

HSL product number from the 
product sticker

Mouse Speed:

Make mouse movements faster 
or slower

Mouse Acceleration:

Make mouse accelerate faster 
or slower

Number of Computers:

Total number of computers 
connected to the KM Switch

1.5 

Enter a description of the configuration, and click 

Next.

 

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