In the past I have used a Quickertek USB wifi link to extend the range of the laptop wifi. That broke and I got a Bear Extender, which worked well, again from the USB connection. Then I found that the Bear Extender would not work with OS 10.12 There seems to be no workaround. I gave up looking for a replacement because I use it on holiday and most hotels have free wifi these days. However a recent holiday to central Europe showed that wifi was often only available in public hotel spaces. Is there a wifi extender that works with OS 10.12 ??