Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Does a KVM Switch causes loss of image quality?

I want to install one but thinking if this will effect the quality of the image (colors/etc), displayed on the screens.

share|improve this question
up vote 5 down vote accepted

I would have to say yes. I have a 2-port KVM for two boxes I have at home, and the image quality is perceptibly different when I'm using the KVM with that monitor vs. when I'm not. Mind you, I am using a cheap KVM, and with VGA cables, i.e. analog signal.

On the other hand, I expect that if you had a good KVM and were using DVI-D or HDMI cables instead, each of which sends a digital signal, then you shouldn't notice any degradation of the picture quality.

share|improve this answer
I'm suggesting that if you don't want to lose image quality, use DVI-D or HDMI as opposed to an old VGA-based KVM. – Chris W. Rea Oct 18 '09 at 14:44
By the way, in my case, what I notice is that text and edges aren't as sharp in the middle of the screen when I go through the KVM. Colors look fine; it's a sharpness issue for me. But your mileage may vary. – Chris W. Rea Oct 18 '09 at 14:45

protected by Community Jul 16 '13 at 12:13

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.