If Mac/MacBook with Mac OS is connected to monitors with Thunderbolt 3 to DisplayPort cable, MST (daisy chain) function can only be enabled in "Mirror Mode".
MST (daisy chain) function can be enabled in both Extend and Mirror modes with below conditions:
| Device | OS | Cable for Device-Monitor Connection | Extend Mode | Mirror Mode |
|---|---|---|---|---|
Device PC/NB | OS Windows OS | Cable for Device-Monitor Connection DisplayPort cable | Extend Mode ✔ | Mirror Mode ✔ |
Device Mac/ Macbook | OS Windows OS | Cable for Device-Monitor Connection Thunderbolt 3 DisplayPort cable | Extend Mode ✔ | Mirror Mode ✔ |
Device Mac/ Macbook | OS Mac OS | Cable for Device-Monitor Connection Thunderbolt 3 DisplayPort cable | Extend Mode | Mirror Mode ✔ |