site_archiver@lists.apple.com Delivered-To: bluetooth-dev@lists.apple.com Daniel, Tim. On 31 Oct 2007, at 23:11, Daniel Birns wrote: Hi Tim, --Daniel On Oct 31, 2007, at 3:59 PM, Tim Hewett wrote: Daniel, Tim. _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.a... Sorry I misread your question. An external BT dongle will override the internal one, I have a class 1 Edimax (highly recommended as it uses the Cambridge Silicon chipset and works right out of the box, unlike the Broadcom-based ones) doing just that. The only problem has been that when the Mac is in discovery state, both the internal and external devices respond when polled (under 10.4.10, not sure about 10.5). This is a problem because they both have the same name, and it is not deterministic as to which one responds first so you can't bet on which one will be first in the list. Who knows which chipset your dongle uses, there is a chance MacOS will not support it, or only support it in limited ways. Thanks for the feedback. The question is not one of having benefit. Here's the question: Today I bought a mouse that has a usb-bt dongle in the box. Say I'm a naive user. I put it on my computer, not knowing anything. What's going to happen? Actually I'm going to find out soon, because I'm going to try it! I don't expect there would be any benefit of having more than one Bluetooth interface active, it may make things worse as they may interfere with each other. I say that on the basis that all Bluetooth comms occur in the same frequency band, with frequency hopping used to help reduce collisions between independent devices. The only benefit I could see is when the devices are different classes, e.g. using a class 1 device for services which need greater range, but a lower power one for short range things like keyboard and mouse. This would be a conscientious way to reduce your interference impact on your neighbours. On 31 Oct 2007, at 19:01, bluetooth-dev-request@lists.apple.com wrote: Can a mac have more than one bluetooth device? I tried plugging in a dongle, and I believe what happened was that the dongle replaced the builtin bluetooth device. Also the api for finding out info about the bluetooth device seems to only support one device. Is there a definitive answer? --Daniel This email sent to site_archiver@lists.apple.com