If you’re using a Mac desktop with a bluetooth trackpad or mouse, you might have come across a chicken-and-egg issue: How do you enable Bluetooth when it’s turned off? Luckily, if you have keyboard access, there is a way to do it!
4K video is still in its infancy, but Mac users are clamoring for high-resolution external displays. Many Macs have the ability to drive a 4K display, but it’s not easy to get it to work with older hardware. Here’s how I connected a 4K Dell P2715Q display to may 2012 Retina MacBook Pro, one of the first 4K-capable Macs.