Apple Silicon changed how Macs drive external displays, and the change caught a lot of accessory buyers out. If you have an M1, M2, M3 or M4 MacBook and you want two or three extra screens, this is what you need to know.
The limitation people run into
The base M1, M2, M3 and M4 chips officially support only one external display over USB-C. Not two. Not three. This is a hardware limitation in the display engine, and no cable or adapter changes it.
The Pro and Max variants support more — typically two to four external displays depending on the chip. So an M3 Pro or M4 Max will drive multiple screens natively.
That sounds like bad news for anyone with a base-model MacBook Air. It is not, because of how these extenders work.
Why a screen extender gets around it
A driver-based extender does not ask the Mac to drive three independent displays. It presents itself as a single device and handles the video routing itself, in software. That is what the driver is for — and it is why a driver-based model can add two or three screens to a base M-series chip that officially supports one.
The trade-off is that you have to install the driver, which needs administrator rights on your Mac. On a personal MacBook that is fine. On a work-issued Mac under device management, it may be blocked — we wrote about that here.
Model by model
All three Displogia models support macOS on M1, M2, M3 and M4 chips as well as Intel Macs, and all three fit laptops from 12 to 16 inches.
- Triple Thrust Pro 14 — three 14″ screens, aluminium, 2.25 kg. One-time driver install.
- Dual Boost Pro 14 — two 14″ screens, full aluminium, 30 mm folded, 2.00 kg. One-time driver install.
- Dual Boost 14 — two 14″ screens, 1.61 kg, no driver required. The one to pick for a managed Mac.
Three things worth checking first
- Which chip do you have? Apple menu → About This Mac. It will say M1, M1 Pro, M2 Max and so on. This tells you how many displays your Mac drives natively.
- Is your Mac managed? System Settings → General → Device Management. If your employer's profile is listed, assume driver installs may be blocked and choose Dual Boost 14.
- Does your USB-C port carry video? On every modern MacBook, yes — all Thunderbolt / USB-4 ports do.
One honest note about audio
None of our models have built-in speakers. Sound continues to play through your MacBook, which is what most people want anyway. If you were expecting speakers in the screens, they are not there.
Still unsure which model suits your Mac? Send us your exact MacBook model and we will tell you straight — including if the answer is that you do not need three screens.