The Adder CCS-PRO4 enables users to interact with up to 4 computers using a single mouse. The operator can simply move the cursor across screen borders to instantly select the computer they need to control, providing the experience of a single desktop – a great saving in both time and desk space.


  • Seamless switching between computers with Free-Flow technology
  • Multiple computers, multiple monitors, single keyboard and mouse
  • No software required for single screen computers
  • Improved desk ergonomics
  • Optional Interactive light modules for screen identification

Seamless switching with Adder 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.

Improved desk ergonomics

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

Multi-Monitor Free-Flow

The system is able to support four monitors per computer. To enable Free-Flow on multi-monitor computers, a driver must be installed on the target computer. This feature is currently available for Windows computers only.

External control options

The unit can be controlled and switched via hotkeys, mouse clicks, Ethernet, RS232 or remote 3 button mouse. With the open API, the unit can be easily set up and integrated into 3rd party systems.

Instant switching with True USB Emulation

Adder’s True USB 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 use the extra function keys, wheels, buttons and controls, 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 optional accessory which connects to the CCS-PRO4. It gives users the option to have a LED indicator positioned on each screen to identify which screen is currently controlling. The color and intensity can be controlled for each screen. A maximum of ten LED indicators can be supported.

Redundant power

For mission critical applications, dual power inlets are now available.

Linux User? Alpha drivers now available for customer trial

Hardware compatibility

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

Software compatibility

All known operating systems for single screens except Linux operating systems, which often have no native support for absolute mouse positioning (see driver trial above). Free-Flow works by reporting absolute mouse coordinates.  Free-Flow Configuration and firmware upgrade programs are available for use with Windows only.

Computer connections

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

User console connections

Audio 3.5mm out x 1, USB type A x 2 (Console- USB2.0 Low and Full Speed), USB type A x2 (Enumerated USB2.0 Low, Full and Hi-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 devices only. 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 enumerated USB ports on the switch

Physical design

Robust metal construction. 290mm/11.4”(w), 30mm/1.2” (h), 130mm/5.1” (d), 0.90kg/2lbs


Toby 3 pin jack x 2 (one power adapter included),100-240VAC 50/60Hz, 0.7A, input to power adapter. 12VDC, 18W output from power adapter

Connection to CCS4

10p10c connector via cable VSC46


CCS-PRO4-XX: CCS-PRO4 Command and Control Switch
XX = Mains Lead Country Code:
UK = United Kingdom
US = United States
EURO = Europe
AUS = Australia
JP = Japan


VSC22: Audio Cable 2 meters (3.5mm stereo jack)
VSC24: USB cable 2 meters (type A to B)
RC4-8P8C: RC4 remote 4 button switch and 3 meter cable
CCS-XB: Expansion box for LED illumination of screens (Including 4 light indicators and connection cable VSC46)
CCS-LED: Multi colour LED light indicators with 3 meter cable
VSC46: 1 meter connection cable from CCS-XB to CCS4
PSU-IEC-12VDC-1.5A = optional power supply



Hardware compatibility

For use with CCS4-USB devices with firmware 2.0 or above & CCS-PRO4

Connections to desk

6P6C connecters, x 10, for the CCS-LED modules. 10P10C connector, x 1, 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



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