KVM Switches

By Baltan
Oct 3, 2006
  1. Hello all.

    Basically i want to know in more depth how they work.
    Also if you have a KVM Switch up and running could you send in pictures so that i can see what they look like and how they are set up please.

    Thanxs for the help it is much appriciated.

    Baltan :)
  2. JMMD

    JMMD TechSpot Chancellor Posts: 854

    What exactly do you want to know? You plug in a monitor, keyboard and mouse and then plug the KVM cables into your PC's. They KVM cables have plugs for monitor, keyboard and mouse.
  3. Nodsu

    Nodsu TS Rookie Posts: 5,837   +6

    In depth.. How deep do you want to go?
    At simplest, there's some circuitry that fakes a keyboard and a mouse (if you have a PS/2 KVM) to the inactive PC so it wouldn't think it doesn't have a keyboard connected. And then there's either a button/knob to multiplex the input between the outputs or some more circuitry to detect certain key combinations for switching outputs. USB is even simpler since you don't have to fake an input device - you just diconnect or reconnect it.

    If you have a kickass IP-based KVM, then it is some embedded computer running Linux, forwarding some abstract keyboard-mouse-video data over the network (and into a local console). The actual analog signalling is done via special adaters attached to the controlled computers.

    And they can look like anything from a grey rackmount box with a dozen RJ45 connectors to a tiny blue plastic thing with three wires running into it.
  4. Baltan

    Baltan TS Rookie Topic Starter Posts: 121

    Thanxs for the input.

    have you got any pictures of the KVM switches set up. :)

  5. Nodsu

    Nodsu TS Rookie Posts: 5,837   +6

  6. Baltan

    Baltan TS Rookie Topic Starter Posts: 121

    Thanxs fro the help and the pictures.

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