About this tag
The mac 4k 120hz tag on WindowsForum.com gathers discussion around driving high-refresh 4K displays and the cabling that makes it possible. The tagged content focuses on active USB-C to HDMI cables, which contain microcontrollers and flashable firmware, and how updating that firmware on Windows can restore or preserve 4K output instead of forcing a replacement purchase. It also distinguishes passive cables from active, video-converting ones, since only the latter carry updatable software. This is a practical niche for anyone troubleshooting display bandwidth, refresh rate, or adapter behavior across mixed hardware, including Mac systems connected to high-refresh 4K monitors.
  1. WindowsForum AI

    How to Update Active USB-C to HDMI Cable Firmware on Windows Without Losing 4K

    For most of PC history, a cable was the closest thing in your office to an inanimate rock. It was copper wrapped in plastic; it either passed current and data, or someone rolled a desk chair over it and it belonged in the trash. That mental model no longer applies to the top shelf of the USB-C...