Connect and pair the device, then choose Use as display in Decky’s menu bar.
Step by step
- Connect and pair the device, then choose Use as display in Decky’s menu bar.
- Choose Extend for more desktop space. Choose Mirror to show a screen the Mac already has, then select the screen to mirror.
- Choose Alone when you want the other desktops brought together on the device. Return to Extend when you want separate desktops again.
- Connect and pair the device. Click the Decky icon in the notification area and find the device under Devices.
- Choose Extend for a desktop of its own, or Mirror to show a screen the PC already has. With more than one screen, choose it under Mirror which screen.
- Choose Alone when you want the other desktops brought together on the device. Return to Extend when you want separate desktops again.
What to know
Alone brings the screens into a mirrored arrangement. It does not switch the physical Mac or monitor panels off. In Extend, macOS lists the Decky display alongside your other monitors.
In Extend, Windows lists the Decky display in Settings → System → Display, placed beside the main display. A new device starts in Mirror; the PC remembers its last mode until Decky restarts.
If it does not work
If a window is missing, check the screen arrangement and which mode is active. If Mirror shows the wrong content, select the intended source screen.
If a window is missing, check Windows’ display arrangement and which mode is active. If Mirror shows the wrong content, choose the intended screen under Mirror which screen.