To exit Target Disk Mode, press and hold the Power button on the computer you use as a disk and then disconnect the USB cable.Experience the vibrant video and authentic audio supported by monitors with Mini DisplayPort for gaming, video streaming, or a multiple monitor workstation. Eject the drive by dragging the drive icon to the trash. The Cable Matters USB-C to Mini DisplayPort Cable supports the newest thin notebooks with USB-C or Thunderbolt 3 to connect a 4K UHD display monitor with Mini DisplayPort.To transfer files, simply drag the files into or select from the drive.You can connect the Macs using Thunderbolt 3, USB-C (on the MacBook), Thunderbolt 2, or FireWire.
To start the process, first connect your 2 computers with FireWire, Thunderbolt, or USB cable that supports high-speed data transfer. If you’re trying to use a Thunderbolt equipped iMac (at least a 2011 model) in target display mode, yes, you’d need to use the TB2 to TB3 adapter as well as a Thunderbolt cable.