M4 Mac mini - Buzzing/Vibration sound

Hi,

I have a question about my new Mac Mini with the M4 chip.

When I listen very closely, the device makes a buzzing sound, almost like the fan is running at a very low speed.

This only happens when I connect an HDMI cable to the Mac Mini. As soon as I disconnect the cable, the buzzing/vibration like sound stops.

I’ve already tried different HDMI cables, as well as another monitor and a different power adapter, but the issue persists.

This happens both when the Mac Mini is powered on and even off. The buzzing sounds stops, if I unplug the power cable of the monitor.

The sound isn’t loud; you really have to listen closely to notice it. It feels almost like the fan is running, but very, very quietly.

Posted on Nov 10, 2024 5:06 AM

Top-ranking reply

Level 1

14 points

Posted on Nov 12, 2024 3:20 AM

Same Problem here. Got the standard entry-level M4 spec.

Monitor connected via a Thunderbolt-to-DisplayPort Cable which never had any issues. Monitor is a 2K 60 Hz Eizo screen.

When connected with the MacMini the buzzing increases, even when the Mini is turned off.

It also occurs with other monitors via HDMI, so no difference to USB-C / Thunderbolt there.

I suspect it comes from the power supply (PSU), as it occurs always when the Mac Mini is plugged in regardless wheather it is turned on or off.

View in context

33 replies

Level 1

0 points

yeah I used a cable like this to use my displays 165hz. only supports 100hz over HDMI as it's only HDMI 2.0

Level 1

12 points

Ordered a new one and got it today.

Same behaviour.

Level 6

12,890 points

Return and stay away! If it quacks like a duck…it’s a lemon😁

M4 Mac mini - Buzzing/Vibration sound