Review: IOGear GCS1764 KVM switch

The IOGear GCS1764 is a KVM switch that can switch the USB devices, the monitor, and the audio for up to four devices.

The IOGear GCS1764 is a KVM switch that can switch the USB devices, the monitor (using DVI-I connections), and the audio for up to four devices. It emulates a mouse and keyboard so that the inactive devices do not miss them.


  • Requirements: USB mouse and keyboard, USB connections on devices, DVI connections on devices
  • Output Ports: USB, DVI-I, microphone, speaker (four each)
  • Input Ports: USB keyboard, USB mouse, DVI-I, microphone, speaker
  • Maximum Resolution: 1900 x 1200
  • Included in Package: KVM switch, power cord, four bonded, 6' video/USB/microphone/speaker cables
  • Cost: $280 or less
  • Additional Information: Product Web site
  • TechRepublic Photo Gallery

Who's it for?

Some users, especially developers, systems administrators, support personnel, and enthusiasts need to use multiple computers throughout their day. A KVM switch makes their lives easier by allowing them to have only one keyboard, mouse, and monitor on their desk to handle these different systems. Users with DVI monitors and video cards will appreciate the improved video quality compared to the still prevalent VGA KVM switches.

What problems does it solve?

Most of the KVM switches on the market that are reasonably priced use VGA connections for the video connections. While VGA is still extremely common, the picture quality is poor compared to the DVI connections. Most DVI KVM switches are quite expensive. This IOGear GCS1764 is still more expensive than a comparable VGA KVM switch, but it is inexpensive compared to most of the DVI KVM switches on the market. In addition to handling the basic KVM duties, the GCS1764 also can switch a microphone and speaker if desired.

Standout features

  • Cost: The GCS1764 is one of the least expensive DVI KVMs on the market.
  • Can switch audio: If desktop real estate is at a premium and you need to always hear sound from your connected systems, then the GCS1764 can switch speakers and a microphone between those systems.
  • Video/Keyboard/mouse emulation: The GCS1764 emulates a monitor, keyboard, and mouse to the inactive devices, which allows them to boot properly even when the focus is not on them.

What's wrong?

  • Funky video emulation: The video resolution emulation is that that of the actual monitor, so devices that are inactive will switch resolutions when they gain or lose the focus.
  • Cannot convert analog to digital: If your computer only has VGA output or a DVI-A output, and your monitor only accepts DVI-D, then you will need an expensive converter to work with the monitor.
  • Quirky: In usage, sometimes double-tapping "Scroll Lock" to activate switching does not work. Switching focus away from a computer in hibernate mode can do some odd things. A quick push of the buttons to switch focus does not always switch all attached devices.

Competitive products

Bottom line for business

For a power user with multiple machines, there is simply no getting around the need for a KVM switch. The loss in productivity due to having to constantly switch to different monitors and input devices more than offsets the cost. Once the decision to buy a KVM switch is made, it can often be hard to justify a more expensive model.

This is where the GCS1764 steps in. By supporting higher resolutions and DVI connections, it provides the features that professionals with high end monitors need to get a much better picture compared to VGA. And the GCS1764 is priced right, not substantially more than a comparable VGA model. Of course, for an even better picture, there is HDMI, but the cost of HDMI systems, monitors, and KVM switches is still very high.

For the professional who needs a KVM switch, the GVCS 1764 is a great compromise between cost and quality. While it does have a few minor little quirks (most KVM switches seem to have some), it covers the basic functionality just fine. The GCS1764 is a good upgrade for anyone using an older VGA KVM switch, and an excellent choice for anyone considering the purchase of a KVM switch.

User rating

Have you encountered or used the IOGear GCS1764 KVM switch? If so, what do you think? Rate your experience and compare the results to what other TechRepublic members think. Give your own personal review in the TechRepublic Community Forums or let us know if you think we left anything out in our review.

Read our field-tested reviews of hardware and software in TechRepublic's Product Spotlight newsletter, delivered each Thursday. We explain who would use the product and describe what problem the product is designed to solve. Automatically sign up today!

Next Page (Photo Gallery) >>


Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net, and TechRepublic.


I was found different types of kvm switches through search engine. I analyzed all the products of kvm switch at different sites and i was surprised. One of the website http://www.smartvm.com provides awesome result from other top sites. i was seen the different kvm switches at this site (the link was http://www.smartvm.com/kvm-switches-c1295.htm) like usb, ip, dvi, 2 port and 4 port kvm switches has good quality. My spouse need 2 port kvm switch, i brought from here and i am very happy. Thanks Peter Pal Disuja Clevlend, Ohio (USA)


I've got a StarTech Starview 4-port model. I like it well enough but it loses M and K connectivity to a system running Bart-PE / UBCD. It also tends to activate the Ctrl key occasionally. That said, it beats four monitors, keyboards, and mice. This looks like a decent option when I go looking for a replacement, although I don't need the mike or speaker connections. I'd really like a KVM with a built-in hub.

Mark W. Kaelin
Mark W. Kaelin

Are you using a KVM switch? Which one and how do you like it?

Justin James
Justin James

You can get this one for under $200 on Newegg and elsewhere too, I'm sure. It's just about the cheapest 4 port DVI model out there. :) Of course, VGA models are much less, but the picture quality isn't the same. J.Ja


I am a kvm switch provider. The use of kvm switch depend upon the condition and requirement from where you want to use. You can see the clear information about all the use of kvm switches at Smartvm.com. From here you can find all your answers. Thanks


I have been fighting this problem for some time. My spouse has a Win 7 computer with an HP 2709m monitor. I would like to set up a Win XP machine with VGA and several times a week, I have a couple of computer club member's computers here to work on. They may or may not have DVI. I have been attempting to set up a Starview 4 Port DVI/VGA USB KVM switch. The Win 7 machine always connects. The Win XP refuses (ignores me) to connect. The same with others. Therefore, I must use my old KVM switch with all on VGA. So far support can only say to change the configuration around until it works...


I have the Cables to Go TruLink at work, and a different brand at home. The TruLink works well. All of these units have issues though. For example, I need to switch the focus to the PC/Laptop at boot-up or it won't set the resolution correctly. Second, why are the shared USB ports on the back of these units? That makes it pretty inconvenient for use flash media or portable hard drives. Third, every once in a blue moon you have to reboot these things, if you lose control of the keyboard. But overall, the TruLink is reliable and works fine for my needs.


I wasn't going to buy one without shopping, but I noticed the article didn't include a price. I can live with VGA picture quality, but I'm getting tired of attaching DVI-VGA adapters to every system I put on my bench. I may replace this VGA sooner than I thought.

Editor's Picks