M4 Mac mini may have a USB-C connectivity problem
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M4 Mac mini. Some M4 Mac mini owners are discovering USB-C issues with their new desktops, with peripherals disconnecting seemingly at random. USB is a fairly resilient technology, with the expectation that things connected using it will typically remain functional for a very long time, outside of external effects. However, it seems that in a small number of cases, USB-C connections on the M4 Mac mini are problematic.
Various Internet posts uncovered by AppleInsider reveal that users are undergoing similar problems. They generally consist of hardware connected using USB-C suddenly disconnecting and becoming unusable, or not connecting in the first place. The reports uncovered in its investigation cover a range of time, ever since the M4 Mac mini's release in late 2024.
In one Reddit example posted on January 15, a poster explains that their USB-C keyboard "intermittently disconnects" and requires a physical disconnect and reconnect to start working again. To rule out other hardware issues, the same keyboard was working fine on the user's other Macs, with the issue only manifesting on the M4 Mac mini.
Other respondents complained that they had similar issues when using docks connecting with USB 3, as well as a KVM switch failing to work after waking the Mac mini. After a physical disconnection and plugging it back in, everything worked fine. Another said it was only an issue with the rear ports, as the freezes didn't manifest when using the front ports.
