11 Replies Latest reply: Jul 9, 2007 3:52 AM by Ton Van Hest
Ton Van Hest Level 2 Level 2 (195 points)
I want to turn off the internal Bluetooth in my iMac and use instead an external BT-Stick.

Anyone that knows how to turn it off?

Intel iMac, 2.0 Ghz, 20, 1 Gb, 250 Gb & G4 iBook, 12:, 800 Mhz, 30Gb., Mac OS X (10.4)
  • Barry Hemphill Level 8 Level 8 (36,900 points)
    Hello ton

    Simply click on the BT icon in the menu bar. Click on open Bluetooth preferences. You will have an on/off option.

  • Ton Van Hest Level 2 Level 2 (195 points)
    I know that but then I cannot use another (external) BT-stick. So I only want to turn of the internal hardware part and not the software part.
  • Barry Hemphill Level 8 Level 8 (36,900 points)
    Hello again:

    To my knowledge, there is no way to do that. Out of curiosity, why would you want to disable the internal BT and use an external one?

  • Ton Van Hest Level 2 Level 2 (195 points)
    I am also afraid that 'turning BT off' is not possible. At least not in an acceptable manner.

    Why would I want to do that?

    Simple. I have an iMac to which a secondary (VGA) monitor is connected. Also I have bought a Mini. So I wanted a switchbox to control 2 systems on a single monitor/keyboard/mouse. With a wired keyboard/mouse: no problem since a standard problem with a standard solution.

    However I have a wireless keyboard/mouse and I enjoy both very much since I hate wires. (stronger: I hate mouse and love trackball but use the MM since I love wireless more).

    Now it is feasible to connect 1 keyboardmouse to 2 systems but (as you can imagine) this is asking for problems since there is always the chance of a desastrous mouseclick on the systems that is not on the active monitor.

    So I hoped that it would be possible to deactivate the internal BT, then put a BT-stick into the KVM device (where otherwise the keyboard/mouse goes) and then only 1 system gets the wanted action.

    This is a little bit elaborate but hope you will understand what I want and why I thought it wise not to put this all in the original post.
  • Conal Ho Level 2 Level 2 (495 points)
    This is really simple. The moment you plug in your external Bluetooth adpater, the computer will not use the internal Bluetooth module and will switch to the external one. I know, because I use a D-Link DBT-120 external Bluetooth adapter with my MacBook Pro which also has Bluetooth built-in.
  • Ton Van Hest Level 2 Level 2 (195 points)
    It would be nice if it were that simple. Is there a way one can check whether it is really the external BT?

    Also there might be a problem since (when using a KVM) only 1 is connected to the external. Will the other not use his internal BT automatically?

    My problem is that I would love to just try it out. But once the KVM is bought it is nearly impossible to return if it does not work as expected.
  • Conal Ho Level 2 Level 2 (495 points)
    I don't know about using it with a KVM, but I can tell you this, once you plug the external dongle into the USB, the internal bluetooth turns off.

    How do I know? Here's my experience:

    1. My external monitor sits several feet away from my MacBook Pro. I use a bluetooth keyboard and bluetooth mouse. Because I'm a bit far away form the MBP, the bluetooth connection using the internal bluetooth is not very reliable and often the mouse tracks unreliably. I bought a DBT-120 external bluetooth dongle and using a USB extension cable routed the dongle closer to where I'm sitting. Now, there are no problems with tracking etc.

    2. When my mouse and keyboard is paired with the internal bluetooth, their respective names are CGYH Mouse, CGYH keyboard. When it is paired with the external, the names are conalho's Mouse, conalho's keyboard. I can check right now and yes, it is being paired with the external and not the internal.

    So, I conclude, plugging in the external bluetooth dongle de-activates the internal bluetooth unit.

    Now, whether or not it works with the KVM I don't know.
  • Ton Van Hest Level 2 Level 2 (195 points)
    It indeed works that way. I was not sure since both times the kb/mouse got the same names.

    However there remains (in my case) a problem.

    With a KVM the BT-stick is connected to either machine meaning ont of the systems will not have the stick connected. As far as I have been able to deduct now I will be forced to reconnect each time that I switch system.

    In my simulated try I connected the BT-stick then pulled it out of the USB-port and then plugged it in again. Both kb/mouse were not automatically connected but I had to go to the "Configure BT" menu (since mouse did not work I had to plug in a wired mouse). So not very usable.

    Could this (disconnect and no automatic reconnect) be caused by the particular BT-stick or is this common? The BT-stick I used is a no-brand stick.
  • DaddyPaycheck Level 6 Level 6 (16,035 points)
    Hi Ton Hest-

    BlueTooth disconnecting in that manner is a security feature and part of the BT protocol, if memory serves.


  • Ton Van Hest Level 2 Level 2 (195 points)
    "BlueTooth disconnecting in that manner is a security feature and part of the BT protocol"

    Sounds very plausible but this does not happen wit my cellphone. After the initial setup with a code it never asks anymore for that.

    More important it makes my setup (2 systems thru KVM on 1 single wireless KB/Mouse) not workable.

    Anyone any ideas?
  • DaddyPaycheck Level 6 Level 6 (16,035 points)
    Ton Hest-

    Perhaps, but your cell phone isn't using a dongle for it's BT communication.

    Dongles generally drop BT pairing because they have no "smarts". They just do whatever the computer tells them to do.

    Once you disconnect and then reattach that particular dongle the system must start all over again especially considering that once the external is unplugged the internal will try and kick in.

    You may need to research a different way of doing this.