May 09, 2016. May 02, 2017. Uninstall Parallels Desktop for Mac; Parallels Desktop for Mac registration and activation; Parallels Desktop for Mac bonus software; Fix 'Unable to load the Parallels driver' after starting a virtual machine; Install Windows on your Mac using Parallels Desktop; Fix 'Unable to connect USB device to virtual machine now. Try to connect this USB. Parallels Desktop 11, for example, can combine Windows 10 and OS X v10.11, also known as El Capitan. With this powerful mix of two Goliaths in operating systems, your Mac gets the two-in-one treatment and a vast array of signature Microsoft and Apple features that can be used almost interchangeably. Parallels Desktop for Mac is the top-rated application for Mac users who want to have it all. By running Windows on Mac devices, it can effectively double the functionality of your computer. With Parallels Desktop 15, Parallels has doubled down on everything that makes the software great. Over 50 new features have been introduced.