There are mGig transceivers. I use this one in my devices and it's works great. I've used in MX 2.5 Gbps WAN ports and MS 10 Gbps ports. The issue would be how to power the AP though. You'd either need a mGig injector or AC power supply. All that said I doubt you're pushing your AP to a level in which you actually need mGig speed.
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