Evan, That depends entirely on the Bluetooth version (2.1,3,4,etc.) and if it's LE (low energy) or not. Just for the savings of ports, I'd try the laptop with the built-in Bluetooth, and if it works well, stick with it. Otherwise, you would have to disable the internal BT, before using the dongle, and possibly uninstall/reinstall software, depending on the particular modules. The difference in battery life is unlikely to be noticeable. Range and reliability are likes to be the more obvious differences. - Alex On Sunday, July 3, 2016, Evan Koblentz via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
I ordered a Bluetooth mouse for my laptop. It comes with a little adapter that plugs into the laptop's USB port. Dumb question: the laptop already has Bluetooth built in, so would I not need that adapter? Then again, which would use drain the laptop battery less -- the internal Bluetooth or the adapter via USB?