IOGEAR 4 Port Dual-Link DVI KVMP with 2.1 Sound Audio



Replaced by: IOGear GCS1204G
Alternative options: Contact Us

The IOGEAR GCS1204 is a 4 Port Dual-Link DVI KVMP with 2.1 Sound Audio ports and an integrated 2-port USB 2.0 hub.  Users can control up to four computers and share multiple USB peripherals from a single keyboard, monitor, and mouse console.

It features the display emulation technology making the switch intelligent to read and remember the monitor's optimal display parameters and refresh rate, a function critical in today's graphic intense applications where large wide screen displays (up to 30") are used. The GCS1204 supports resolutions up to 3840 x 2400. Additionally, the patented asynchronous switching allows the user to independently switch applications between the connected computers. You can run one application on one computer while running another application on the other. Moreover, the integrated 2-port USB 2.0 hub is available for each computer to share multiple peripherals connected to the hub or via an external powered USB 2.0 hub. Access to such peripherals is performed on a one-at-a-time basis. Finally, the audio ports allow for connecting powered PC speakers for stereo sound and a single microphone for audio input/output to each computer.

IOGEAR GCS1204 Back View
IOGEAR GCS1204 Back View

Switching between computers can be done in two convenient ways:

  1. push button port selection located on the unit's front panel
  2. A "Hotkey" combinations entered from the keyboard.

Setup is fast and easy.  There is no software to configure or install. Also, the included USB to PS/2 converter permits flexible configurations for the keyboard and mouse.

The GCS1204 is ideal for applications where high resolution monitors are used or required, such as in computer aided design (CAD), desktop publishing and graphic design, video editing, and gaming.

IOGEAR GCS1204 Features:

  • One console controls up to four computers
  • 2-port USB 2.0 peripheral hub
  • Display emulation technology reads and remembers the monitor's parameters (DDC) so there is no delay or change of video resolution when switching between, or booting computers
  • 2.0 or 2.1 Audio
  • Asynchronous hotkey switching between KVM focus, USB peripheral, and audio ports
  • Switching "Beep" mutable via hotkeys
  • Complete keyboard and mouse emulation for error free booting and real-time switching
  • Supports Mac keyboard and special keys
  • Maximum video resolutions:
  • DVI-D Dual link: 2560 x 1600
  • DVI-D Single link: 1920 x 1200
  • Supports special monitors with 3840 x 2400
  • Firmware upgradeable
  • DVI compatible, HDCP pass-through
  • Mouse emulation may be disabled to allow programmable buttons to function

IOGEAR GCS1204 Application Diagram
IOGEAR GCS1204 Application Diagram


  • USB or PS/2 keyboard and mouse
  • Dual or Single Link DVI video card*
  • A free USB port on each computer

Optional equipment:

  • Computers with sound support
  • 2.0 or 2.1 powered PC speakers
  • Microphone

* If you want to connect a VGA output you will need to purchase a third party DVI-I video cable and VGA to DVI adapters. Ensure your LCD monitor will work with an analog input.

Package Includes:

  • 1 x 4-port DVI KVMP switch
  • 4 x custom KVM 6ft cables
  • 1 x USB-to-PS/2 converter
  • 1 x firmware upgrade cable
  • 1 x power adapter
  • 1 x user manual
  • 1 x registration form

IOGEAR GCS1204 Specifications:

Height 1.6 in. (4.1 cm.)
Width 10.2 in. (26 cm.)
Depth 2.9 in. (7.4 cm.)
Weight 2.0 lbs. (0.9 kg.)
Voltage 5 Vdc
Amps 2 A
CPU Connectors  
Mouse USB
Keyboard USB
Monitor Dual Link DVI
Microphone Yes
Audio 2.1
Console Connectors  
Mouse USB
Keyboard USB
Monitor Dual Link DVI
Microphone Yes
Audio 2.1
Selected Bright Orange
On Line Dim Orange
Auto Scan Blinking Orange
USB Peripherals Green
Port Selection Holt Key / Manual
Video Input Dual Link DVI
Video Output Dual Link DVI