---
product_id: 2346139
title: "IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G)"
brand: "iogear"
price: "₩661348"
currency: KRW
in_stock: true
reviews_count: 3
url: https://www.desertcart.kr/products/2346139-iogear-4-port-dual-link-dvi-kvmp-pro-switch-w
store_origin: KR
region: South Korea
---

# Supports high-end 3D graphics Up to 4K UHD resolution Includes all necessary cables IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G)

**Brand:** iogear
**Price:** ₩661348
**Availability:** ✅ In Stock

## Summary

> 🎉 Elevate Your Workspace with Cutting-Edge Connectivity!

## Quick Answers

- **What is this?** IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G) by iogear
- **How much does it cost?** ₩661348 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/2346139-iogear-4-port-dual-link-dvi-kvmp-pro-switch-w)

## Best For

- iogear enthusiasts

## Why This Product

- Trusted iogear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Audio Excellence:** Supports 2.0 and 2.1 audio for immersive sound
- • **Seamless Switching:** Asynchronous hotkey switching for effortless control
- • **Future-Proof Design:** Firmware upgradable for long-term usability
- • **High-Resolution Support:** Experience stunning visuals up to 2560 x 1600
- • **Universal Compatibility:** Works with gaming and Mac keyboards, no limits!

## Overview

The IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch (GCS1204G) is a versatile solution for managing multiple devices with maximum video resolutions of 2560 x 1600 and support for 4K UHD when paired with compatible hardware. It includes all necessary cables and offers seamless switching between KVM focus, USB peripherals, and audio ports, making it ideal for both professional and gaming environments.

## Description

IOGEAR GCS1204G, A 4-Port Dual-Link DVI KVMP Pro Switch supporting high-end 3D graphics, compatibility with most gaming keyboards available and an integrated 2-Port USB 2. 0 hub for peripheral sharing. Now, users can control up to four computers and share multiple USB peripherals from a single keyboard, monitor, and mouse console. It features IOGEAR DynaSync intelligent technology which allows the KVMP 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 inch) are required. This powerful KVMP can increase efficiency and save equipment cost for applications where high resolution, large or widescreen monitors are required: CAD (computer aided design) and cam (computer aided manufacturing), desktop publishing/graphic design/video editing, Medical/surgical/diagnostic displays, high-end gaming - where high and ultra-high video resolution is demanded. 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. Switching between computers can be done in two convenient ways: push button port selection located on the unit's front panel; a “hotkey” combination entered from the keyboard*iogear’s DynaSync provides the edit support for Windows 7 OS

## Features

- Maximum video resolutions - DVI-D dual Link: 2560 x 1600/DVI-D single Link: 1920 x 1200
- Audio support for 2. 0 or 2. 1 Audio
- Supports high-end 3D Graphics
- Compatible with gaming keyboards and support Mac keyboard and special keys
- All cables are included
- Asynchronous hotkey switching between KVM focus, USB peripheral, and audio ports
- Dynasync supports EDID eliminates delay or change of video resolution when switching
- Firmware upgradable
- Up to 4K UHD 3840 x 2160 @30Hz resolution when used with IOGEAR’s GHDDVIC4K3, 4K sources, and 4K monitors

## Images

![IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G) - Image 1](https://m.media-amazon.com/images/I/71C90UsxkPL.jpg)
![IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G) - Image 2](https://m.media-amazon.com/images/I/6160kP4aHjL.jpg)
![IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G) - Image 3](https://m.media-amazon.com/images/I/61s43-NiCDL.jpg)
![IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, w/Full Set of Cables,(GCS1204G) - Image 4](https://m.media-amazon.com/images/I/71wuPH5z-XL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    If it only had real buttons...
  

*by P***E on Reviewed in the United States on November 1, 2015*

Note that this site combines reviews for multiple IOGEAR KVM models. My review is for the IOGEAR 4-Port Dual-Link DVI KVMP Pro Switch, GCS1204G that I purchased in 2015.When I upgraded the monitors on two of my systems, my old IOGEAR KVMs were unable to display resolution higher than 1920x1200, so I upgraded to this model. One KVM usually runs with four Windows PCs (Vista, Home Server 2011, 7 and 8) feeding a 2560x1440 monitor and wireless USB keyboard and mouse. The other KVM runs with three Windows 7 boxes and one Mac (Mavericks) with wired USB keyboard and wireless USB mouse. All the machines work as expected with nice stable displays at each machine’s maximum resolution.I have successfully run both monitors at their full resolution with a DisplayPort to dual-link DVI cable and from the Mac with a Thunderbolt (Mini DisplayPort) to DVI cable. I can switch video through the KVM with HDMI to DVI cables but no surprise that none of the machines will run higher than 1920x1200 through their standard HDMI ports.Cons:The flush pressure switches: the nearly identical previous generation IOGEAR KVM had nice switch buttons. One of my KVMs is on a low shelf out of direct view so it became suddenly challenging to locate the correct button. Yes, there are keyboard combinations to switch between machines but I prefer the buttons. I stuck little rubber foot pads on the switches.A weirdness that’s probably unique to my hardware setup: on the system with the 2560x1440 monitor there’s a problem that consistently occurs when switching from one PC  running a streaming (Netflix) video full screen (in Chrome) to another PC doing typical routine desktop stuff and then back to the PC with the video. The monitor cannot lock into the video and will stay black. If I remember to change Chrome to a windowed view before switching away, it’s not a problem switching back. When the problem occurs, I can switch normally to any other active PC on the KVM. If I have a directly connected second monitor connected to the problem machine and have made it the primary monitor I can get at the controls, minimize Chrome, and recover from the blank screen.The included cables are nice in that the video, USB, and audio wires are bonded together, but I wish they were not so fat and inflexible. I have slimmer and more flexible dual-link DVI cables that seem to work fine.Yet another wall-wartNot a problem with the KVM but an advisory – when I initially set up one of the KVMs, I didn’t swap out a single-link DVI cable from one machine to the KVM and that prevented all the other connected machines from running at full resolution.

### ⭐⭐ 







  
  
    A KVM switch which was good while it still worked.
  

*by A***D on Reviewed in the United States on May 9, 2015*

This is OTHERWISE a very good KVM switch; however, I started having a couple of problems with it about 3-4 months after I bought it.I work from a home office (I make my living as a software architect), and ports 1-4 are (1) Linux workstation, (2) Linux workstation, (3) win7 workstation, and (4) office win7 laptop, respectively.  My monitor is a Samsung SyncMaster 2443, and it is handled nicely (BTW I bought this particular model because it supports a Dual Link: 2560 x 1600 display and I will be replacing my current monitor with one with that resolution some time this year).There were two immediate "gotchas" however.First, IF I connect the (vga-only) laptop to the system (using a DVD-I/vga stepdown adapter), then when I reboot either of the two Linux systems, the EDID of the monitor no longer gets through to the computer and I am automatically limited to a 1024x768 graphical environment.  Not good.  So I have the laptop permanently connected directly to the VGA port on the monitor, and the other 3 machines connect through the kvm switch.  Then whenever I change to or from the laptop, I have to change the display manually using the button on the front of the monitor, and that isn't a major issue - just an annoyance.The second "gotcha" is that this kvm switch is supposed to be able to store the EDID of the monitor and retain if for that port until it is cleared.However, it does not do so (unlike my other IOGear KVM switches), and had it done so then the first problem (above) might never have occurred.Therefore this failure may be the more serious of the two "initial gotchas."Unfortunately there is third issue which began about 3 months after I started using this kvm switch.  Initially ONLY on port 1, at random times the "mouse focus" on the display would freeze to one window on the screen, and it was not possible to get the mouse to focus anywhere else unless I rebooted the KVM switch.  As this is a time-consuming task, after some experimentation I discovered that the problem was only on port 1, so I swapped connetions around so that port 1 was the windows workstation (different O/S, and the problem went away - or so I thought).  This worked well for a couple of months...  however over time the problem has slowly spread to all 4 ports, and now the problem happens regularly - but NOT consistently - on all 4 ports.Sometimes the switch will go for hours without showing this problem, but at other times it happens every time I click a mouse button, and it is both inconvenient and a HUGE waste of time.  A problem that takes 5 minutes or more to solve and which occurs as often as every time I click a mouse button cannot be lived with. :-(I have RMA'ed the switch to IOGear, and will be using a different KVM switch temporarily until it is repaired and returned.And that is my other complaint here.  I have used other IOGear KVM switches, and before now I have never had to RMA one for repairs.  I was surprised that they have no means to cross-ship, even if I gave them a credit card to secure their doing so.  I asked multiple times, and there was no way to get a replacement so that I would be unable to work normally while they had my switch.  As a result I have had to buy another switch to use as a replacement, and about that I am NOT a happy camper.Finally to be completely accurate, while it worked, it was excellent.  There was no video "bleedover" or "crosstalk" as has occurred with other KVM switches, the switching was completely accurate and clean, and - despite the warnings to the contrary - my Logitech wireless mouse works perfectly with it.Nevertheless, with 4-port switch costing as much as this one, this particular problem should never have occurred.So:IF you get one which works properly, then it will be fine.But if you get one with this particular problem you will definitely regret having bought it.Therefore I cannot recommend this switch to anyone.

### ⭐ 







  
  
    One Star
  

*by R***A on Reviewed in Canada on April 27, 2015*

lasted about a year then died

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-07*