DISCONTINUED - This product is no longer manufactured




This product has been replaced by a newer version, we recommend the latest version of this product for new projects - see ADDER CCS-Pro4

Continued support on this product is still available to our existing customers, please contact our Support Team or your local Adder Office for more information.

We recommend the CCS-PRO4 or the CCS-PRO8 for new projects.

The CCS4-USB enables users to interact with up to 4 computers as if they were an extended desktop using a single keyboard and mouse. Rather than having to use multiple HID devices, operators simply move the cursor across screen boarders to the computer they want to control


  • Seamless switching between computers
  • Multiple computers, multiple monitors, single point of input.
  • No software required
  • Improved desk ergonomics
  • Interactive light modules for identification
Product codes

Product Features

Seamless switching by mouse control with Free-Flow Technology

Free-Flow allows users to automatically switch between target computers simply by moving the mouse pointer from screen to screen. Unlike software only variants ,no software or networking  is required on your mission critical computers for Free-Flow to work.

Multi screen Free-Flow

The system is able to support 8 monitors per computer. To enable Free-Flow on multi screen computers, a driver must be installed on the target computer.
This is available for Windows computers only.  To find out more VISIT THIS PAGE

Improved desk ergonomics

With only one keyboard and mouse required to operate 4 computer systems, the desk space can be made more ergonomically effective and reduces time for operators to multiplex to the different systems.

Hot Key, Mouse and remote switching capabilities

Hotkeys or mouse button presses can be programmed to change channels. Alternatively a remote 4 button switch (RC4) or a 3rd party control system could also initiate changes via RS232

Instant switching with True Emulation USB 2.0 technology

Adder’s True Emulation technology overcomes limitations of other KVM switches by emulating the true character of the connected devices to all the computers simultaneously. This means that you can now use the extra function keys, wheels, buttons and controls that are commonly found on modern keyboards and mice without sacrificing switching times.

Independent simultaneous device selection

Switching options enable you to use the keyboard and mouse on one computer whilst your USB peripherals and speakers are independently connected to different computers. You can of course still switch all the connected devices to any one of the connected computers.

Screen illumination module

The CCS-XB illumination module is an accessory which connects to the CCS4-USB. It gives the users the option to have a LED module positioned on each screen to indicate which screen you are currently controlling. The colour and intensity can be controlled for each screen. A maximum of 10 illumination modules can be supported.


Hardware compatibility

All computers equipped with certified USB1.1 and USB2.0 connections

Software compatibility

All known operating systems for single screens except:

There is no Free-Flow support for Linux.

Multi-Monitor Free-Flow is windows only.
Free-Flow Configuration application and Firmware Upgrade programs are Windows only.

Computer connections

Audio 3.5mm in x 4, USB type B x 4

Desk connections

Audio 3.5mm out x 1, USB type A x 2 (Console- USB2.0 Low and full speed), USB type A x2 (Emulated USB2.0 Low/ Full and High Speed)

USB specification for Console connection

Supports up to six low or full speed devices
Keyboards which support multiple devices behind a hub can now be supported.
The USB class of the supported devices on the console port is limited to HID only devices. It is not possible to use other USB devices e.g. Card readers, Memory sticks or Touch screens on the console port.
These devices need to be connected to the emulated USB ports on the switch.

Physical design

Robust metal construction. 230mm/9.1” (w), 40mm/1.6” (h), 85mm/3.3” (d), 0.75kg/1.65lbs. 


2.5mm DC jack (power adapter included),100-240VAC 50/60Hz, 0.4A, input to power adapter, 5VDC 12.5W output from power adapter

Operating temperature

0 to 40 deg C / 32 to 104 deg F




Hardware compatibility

For use with CCS4-USB devices with Firmware 2.0 or above

Connection to CCS4:

10p10c connector via cable VSC46

Connections to Desk:

10 x 6P6C connecters for the CCS-LED modules
1 x 10P10C connector for upgrade cable or remote control RC4 4 button switch

Physical design

Robust metal construction. 95mm/3.7” (w), 30mm/1.2” (h), 65mm/2.6” (d), 0.22kg/1.65lbs.

Operating temperature

0 to 40ºC / 32 to 104ºF




Order Codes


XX= Mains Lead Country Code:

UK = United Kingdom
US = United States
EURO = Europe
AUS = Australia


Additional Accessories

CCS-XB: Expansion box for LED illumination of screens (Including 4 light modules and connection cable VSC46)
CCS-LED: Multi colour LED light modules with 3 meter cable
VSC24: USB cable 2m (type A to B)
VSC22: Audio cable 2m (3.5mm stereo jacks) 
VSC40: Flash upgrade adapter plus standard 3m patch lead
RC4-8P8C: RC4 remote control plus standard 3m patch lead

Associated products

ADDER Free-Flow 

The ADDER Free-Flow represents true innovation in KVM switching. For the first time, Free-Flow allows users to automatically switch between target computers simply by moving the mouse pointer from screen to screen. What makes this such a revolution is that you no longer need software to be installed on your mission critical computers in order to work.

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Global Device Management
GDM delivers integrated solutions that give healthcare providers better control of information in hospital Operating Rooms.
Where to buy

Adder products are purchasable through our key technology partners. You can find a partners on our where to buy page.

Where to buy


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