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4 Port Desktop KVMs

4-Port DualView Dual-Link DVI KVMP Switch with Audio (TAA Compliance)

4-Port Dual View DVI TAA Compliant
MPN: GCS1644

UPC: 881317502841

Sale price$629.95

IOGEAR's GCS1644 4-Port DualView DVI KVMP Switch marks a leap in KVM functionality by combining IOGEAR's DynaSync™ with the widescreen graphics resolution of today's 30+ inch monitors, supporting DualView / Dual-Link DVI, 2560 x 1600 (higher than 1080p HD) and 3D graphics. Two DualView / Dual-Link display computers can be accessed and controlled from a single console running dual-displays.

4-Port DualView Dual-Link DVI KVMP Switch with Audio (TAA Compliance)
4-Port DualView Dual-Link DVI KVMP Switch with Audio (TAA Compliance) Sale price$629.95
4K UHD Resolution

Achieve 3840 x 2160 @30Hz 4K UHD Resolution with this Dual-Link DVI KVM Switch using IOGEAR's 4K HDMI to DVI-D Converter Cable GHDDVIC4K3. With this reversible 4K cable, you may use 4K source and project to 4K monitors, without the need to upgrade your Dual-Link DVI KVM switch setup.

Convenient Switching Methods

Switch and access four DisplayPort computers from a simple pushbutton on the front panel or hotkeys combination on your keyboard. IOGEAR's 4-Port Dual-Link DVI Dual Monitor KVM Switch also offers the latest mouse port-switching functionality to change ports. Easily switch between connected computers by clicking the wheel button on your 3-button USB mouse.

Share USB 2.0 Devices

The GCS1644 also features two USB 2.0 peripheral ports for asynchronously sharing USB devices between your computers. A powered USB hub may be attached to the peripheral ports for added functionality. Audio and microphone support makes sharing speakers and a microphone a convenience for the users which serves as an extra value.

  • Dual View Dual-Link DVI support - Share 2 DVI monitors with a single keyboard and mouse, along 4 computers
  • Quad View (DCC Mode) - when connecting two GCS1644 units together
  • High resolution - Up to 4K UHD 3840 x 2160 @30Hz1
  • 2-port USB 2.0 peripheral hub to share printers or external hard drives
  • Audio and Microphone support - full bass response provides 2.1 stereo sound
  • Asynchronous hotkey switching between KVM focus, USB peripheral and Audio ports
  • IOGEAR's DynaSync™ reads and remembers the monitor's parameters (EDID) so there is no delay or change of video resolution when switching between, or booting computers2
  • Complete keyboard and mouse emulation for error free booting and real-time switching
  • Computer switching via front panel push buttons, hotkeys, or mouse3
  • Auto Scan Mode to monitor connected computers
  • Supports MAC and Sun keyboard and special keys
  • Firmware upgradeable
  • HDCP compliant
  • Plug & Play - no software installation required
  • Buzzer ON/OFF via hotkey
  • Multi OS platform support
  • All cables included

1Use with IOGEAR's 4K cable GHDDVIC4K3, 4K sources, and 4K monitor
2IOGEAR's DynaSync™ provides the EDID support for Windows® 7
3Mouse port switching supported alongside mouse emulation mode using a USB 3-button mouse wheel


  • 2 x DVI displays
  • 1 x standard 104 key wired USB keyboard
  • 1 x standard 2 or 3 button wired USB mouse
  • Microphone and speakers (optional)


  • 2 DVI ports
  • 1 USB port
  • Audio ports (optional)

Operating Systems:

  • Windows® XP, Windows Vista®, Windows® 7, Windows® 8, Windows® 8.1, Windows® 10
  • Mac OS 9 to 10.x
  • Oracle® Solaris
  • Linux®, Unix and other USB supported systems*

*Additional drivers and support may be needed

**IOGEAR's DynaSync™ provides the EDID support for Windows® 7

  • 1 x 4-Port Dual View Dual-Link DVI KVMP Switch
  • 4 x Dual-Link DVI-D KVM Cable
  • 4 x Dual-Link DVI-D Cable
  • 1 x Power Adapter
  • 1 x Installation Guide
  • 1 x Warranty Card

Windows 10 32-bit

Windows 10 64-bit

Windows 7 32-bit

Windows 7 64-bit

Windows 8.1 32-bit

Windows 8.1 64-bit

PLEASE NOT UPLOAD THIS Firmware if your GCS1642 or GCS1644 does not have a DCC port on the back. If you do not have a DCC port it is a non A VERSION KVM. This firmware could damage a non A version KVM . If you have any questions please call 866-946-4327 to speak with a support specialist

Need more help with this product? Visit IOGEAR Knowledge Base

Computer Connections
Port SelectionHotkeys or Pushbutton
Console Connectors
Monitor2 x Dual Link DVI-I Female (Output Ports)
Keyboard1 x USB Type A Female
Mouse1 x USB Type A Female
Audio1 x Mini Stereo Jack Female (Green)
Microphone1 x Mini Stereo Jack Female (Pink)
CPU Connectors
Monitor8 x Dual Link DVI-I Female (Input Ports)
Keyboard & Mouse4 x USB Type B Female
Audio4 x Mini Stereo Jack Female (Green)
Microphone4 x Mini Stereo Jack Female (Pink)
F/W Upgrade1 x 4-conductor 3.5mm Jack
Port Selection5 x Pushbutton
Power Connections1 x DC Jack
USB2 x USB Type A Female
Mode3 (Orange)
KVM4 (Green)
Audio4 (Green)
USB Peripherals4 (Green)
Video Resolution4K UHD: 3840 x 2160 @30Hz (use with GHDDVIC4K3, 4K sources, and 4K monitors); Single Link DVI: 1920x1200; Dual Link DVI: 2650x1600
Scan Interval1~99 seconds (5 seconds by default)
VoltageDC 5.3V
Operation Temperature0~50°C
Storage Temperature-20~60°C
Humidity0~80% RH, Non-condensing
Unit Dimensions
Unit Package Dimensions
Master Carton
Master Carton Qty.3
Master Carton Wt.48.64lb
Unit Pack Wt.14.88lb
Unit Wt. w/accessories12.82lb
Unit Wt.5.8lb