This evening I noticed that I have been working on a BT keyboard & mouse to control my MBA, which is outputting on a 27" iMac in target display mode, which MBA is running a Win7 VM in fusion, which ...

A while ago, Apple used to include a software feature with macOS on older iMac models. It was called Target Display Mode, and it allowed you to turn an iMac into an external display once your iMac was ...