HDMI splitter with M1 Mac 2020

Soldato
Joined
22 Nov 2007
Posts
4,209
uHas anyone succesffully used a hdmi with splitter with an m1 mac?

I got an amazon basics splitter which works fine with my work windows laptop. I have a usb c adapter plugged into the mac and when i plug the hdmi into it nothing happens annoyingly.
 
What are you trying to achieve with the splitter? Multiple external monitors?

I have an external monitor for my work laptop, I want to use the splitter so when i'm not using the work laptop i can plug my mac into the screen.

Or if i had another hdmi cable i could have them both plugged in and switch from mac/work laptop when need be.
 
Last edited:
I have an external monitor for my work laptop, I want to use the splitter so when i'm not using the work laptop i can plug my mac into the screen.

Or if i had another hdmi cable i could have them both plugged in and switch from mac/work laptop when need be.

Ah ok. The M1 Macs seem to be quite fussy when it comes to external displays — it could be the USB-C to HDMI adapter causing the issue or the splitter itself.

I've got two external displays running off an M1 iMac, but they're both connected via DisplayPort > USB-C cables (technically, one of the monitors is connected via a Dell Docking Station but that's another story).
 
If I'm reading this right, you want to use one display between two devices, a work laptop and the Mac?

What splitter did you get exactly? Ideally you want a HDMI switcher/hub, the splitter you may have could work the other way round, as in 1 input, 2 output.

EDIT: Just remembered the M1 Macs needs an active adapter since the USB-C port doesn't natively support HDMI signalling, easiest option is a USB-C hub with HDMI out.
 
Last edited:
If I'm reading this right, you want to use one display between two devices, a work laptop and the Mac?

What splitter did you get exactly? Ideally you want a HDMI switcher/hub, the splitter you may have could work the other way round, as in 1 input, 2 output.

EDIT: Just remembered the M1 Macs needs an active adapter since the USB-C port doesn't natively support HDMI signalling, easiest option is a USB-C hub with HDMI out.

thats right, its an amazon basics one. Shall i just get a display port to hdmi cable ? That way the DP slot is used for the mac and the hdmi for the windows laptop.

I do have a ubc c hub already for the mac.
 
thats right, its an amazon basics one. Shall i just get a display port to hdmi cable ? That way the DP slot is used for the mac and the hdmi for the windows laptop.

I do have a ubc c hub already for the mac.
That won't work either since it still relies on the USB-C port to support HDMI mode, which the M1 lacks.

Does the monitor itself not have Displayport?

EDIT: Wait I may have misunderstood, you mean using the M1's native DP port to HDMI? Not 100% sure if it will work but could give it a go.
 
Last edited:
That won't work either since it still relies on the USB-C port to support HDMI mode, which the M1 lacks.

Does the monitor itself not have Displayport?

EDIT: Wait I may have misunderstood, you mean using the M1's native DP port to HDMI? Not 100% sure if it will work but could give it a go.

No you didn’t misunderstand but your kdea about the dp may work, will give it a go.

I habe used the usb c hub to hook the m1 up to this screen via hdmi though before.
 
No you didn’t misunderstand but your kdea about the dp may work, will give it a go.

I habe used the usb c hub to hook the m1 up to this screen via hdmi though before.
Ah if the HDMI on your current hub works with the screen directly, then it should be working.

Might be obvious but... you did try the button on the splitter right?
 
Back
Top Bottom