The new iMac with the M6 chip can be configured with a 2.5 Gigabit Ethernet port, which is built into the power adapter rather than the computer. The port is a $30 upgrade option for the lower-end iMac and comes standard with the higher-end model. For the previous model, the optional Ethernet port is limited to 1 Gigabit.
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Top Rated Comments
Just buy a $20 USB-C to 2.5G Ethernet adapter for the older iMac. Problem solved.
I wonder if the power adapters are interchangeable and if putting the 2.5 Gbps one on an older iMac would work or if it requires something inside the iMac connector itself to work.











































