LabQuest Emulator is not compatible with Mac OS. When using a Mac, we recommend LabQuest Viewer^® (LQ-VIEW).

The LabQuest Viewer software allows you to view and control LabQuest units wirelessly from your Windows or Macintosh computer. When used in conjunction with a projector, you can share the LabQuest screen with the entire class.

To use an original LabQuest with the LabQuest Viewer software, you will need a Vernier Wi-Fi USB Adapter (WIFI-USB, discontinued), sold separately.

For more information, see:
What is the difference between LabQuest Emulator and LabQuest Viewer?
What are the system requirements for LabQuest Viewer?