Question about IOGear GCS632U 2-port KVM Switch

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GCS632U - Speaker issues

After following the instructions in the manual to hook up the speakers, now when I play music on my main PC, I get feedback on the monitor (sqiggly lines keeping beat to the sound). No sound comes out of the laptop.

Originally didn't need sound so never hooked up the cable to KVM until a couple of weeks ago.

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  • annaohoh Jan 20, 2009

    I took your advice and RMA'd the first GCS632U. I had my company purchase another one. Same problem! 8=(
    The laptop displays videos and plays music just fine. The desktop doesn't. Same squiggly lines across the screen. Updated the video driver, monitor driver, rebooted, switched KVM ports... all to no avail.

    Thanks for trying to help. I think after 3 hours of putzing with it today, I'm going KVM-less.

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The only solution for great quality is to spend $150 more and purchase the higher end "Harmony" IO-Gear KVM switch, this works great! But if you don't want to spend that much, this is what I did with my IO-Gear GCS632U. I did RMA the first one and when the second worked the same way I realized I would have to live with it since I didn't have more to spend at the time! The video quality is terrible at high resolutions with this KVM, no MATTER WHAT!!! Playing with refresh rates helped a little, but I still saw some ghosting and interferance at times (most likely due to the lack of ferrite beads on the ends of the already "too small to carry a good signal" video cables), otherwise it looks and works great with resolutions under 1280x1024. The sound also suffers, obviously but I found out (using a multimeter) that the sound issue is due to the KVM unit trying to amplify the sound a little so to solve it I simply turned sound down in windows and increased the volume on my speakers until it sounded ok (if this doesn't work for you, try it vice versa).

Hope that helps!

Posted on May 14, 2009

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To isolate the problem, please follow the steps below:

1. Connect first your speakers directly to the computer to see if the speaker is working correctly.
2. Checked the physical connection: make sure that your speaker is properly connected to the KVM and the KVM to the computer.
3. Make sure that you are going to play a music on the focused computer.
4. Make sure that your speaker is supported by this KVM switch.

NOTE: The GCS632U is designed to work with 2-channeled speakers only. If you are using 5.1 multimedia speakers, there's a possibility that it might or it might not work. You may refer to IOGEAR Web site and you will find this information.

Posted on Apr 14, 2009

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I think you have a defective device there. RMA!

Posted on Jan 10, 2009

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1 Answer

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Sounds like there's a bad connection on the second computer, may just have to plug another mouse/keyboard in.
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Before you reconnect the KVM switch, make sure that the computers are turned off. Re-connect the KVM switch to the computers, and then reconnect the keyboard and mouse.

Turn on the first computer, followed by the second one. If you are still not getting any light indicator, then the KVM switch is dead.

You may contact IOGEAR through 866-946-4327.

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The Mini DVI to VGA adapter can only convert the port, but it does not have an ability to convert the signal from digital to analog when it's connected to the KVM switch.

What you need to have is a DVI to VGA SIGNAL converter. Unfortunately, I don't have a model number handy, so I would suggest to contact IOGEAR, because I'm sure that they already have a work around with this issue.

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GCS632U is designed to work with standard USB keyboard an mouse only. You have to make sure that you are not using any type of adapter such as PS/2 to USB adapter. To further isolate the problem, please follow the steps below:

1. Connect the USB keybord directly to th computer to make sure that the keyboard is working properly.

2. Make sure that the keyboard is connected to the keyboard port on your KVM switch. You may take a look under neath this GCS632U (near the USB ports) and you will see an icon where to connect the keyboar and mouse.

3. If you're still gettings the same problem, Try power cycling this kvm switch by disconnecting if from the computers and disconnect also the keyboard and mouse from the KVM switch and leave them disconnected for a minute or two.

4. Reconnect everything after two minutes and then reboot the two computers.

5. If same problem exist, try using different USB keyboard.

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Operating System doesn't deal anything on your problem. The problem depends on the brand of you computers or the type of keyboard you are using.

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If you have an Apple Aluminum keyboard that does not work with the GCS632U, you may contact the IOGEAR Tech support and they will process a Return Merchandize Authorization (RMA) if your device is still under the warranty period.

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