Macbook Pro M3 Dual External Display Support

[withinsight]

My employer provided me with a Macbook Pro with the base M3 (not M3 Pro) chip, which only supports 1 single external monitor. Following the advice in this article, I've tried:

• Anker USB-C to Dual HDMI. Didn't support dual external monitors in extended mode (only mirror).
• Baesus USB 6-in-1 Docking Station. USB-C ports didn't support video with this adapter.
• Startech USB to Dual HDMI. Supports 2 monitors, using InstantView software.

However, the lag is so great with this third adapter that its unusable. Everything from mouse movement to the mission control gesture is so slow that its not acceptable for a work environment. You lose track of the mouse cursor when its on either of the external monitors. I've worked with Startech support, and tried everything from reinstalling the drivers, rebooting, upgrading the firmware on my 2 external Samsung monitors, changing the resolutions to "low resolution" mode, and the lag still persists.

I've had to return all 3 adapters. I'm at a point where I feel I'm out of answers. I know Apple is going to say "we don't officially support this", but the reality is this machine was not my choice, and I have a multi-monitor work environment that I need to use this machine in (and I'm likely not alone in this scenario).

 

[Cory Cooper]

Hello and welcome.

Sorry for the delayed response.

Apple may issue a software update: M3 MacBook Pro to Get Multi-Display Support With Software Update

Maybe one of these would work better: How to Add Two or Three Screens to the M3 MacBook Pro

Hope that helps,

C